Weed prevention and control method for cape jasmine seed breeding field

Abstract

The weed prevention and control method comprises the step of spraying a compound pesticide to stems and leaves for the first time in the three-leaf stage of the euonymus japonicus, and the compound pesticide comprises 150-210 mL / mu of 5% imazethapyr, 50-70 mL / mu of 158 g / L efficient haloxyfop-R-methyl and 50-70 mL / mu of 440 g / L fluoroether.bentazone. The method has a relatively good weed prevention and control effect on the rupestre chinensis breeding field, and provides weed prevention and control integrated technical support for large-area planting and production of rupestre chinensis.

Description

Technical Field

[0001] The present invention relates to the field of plant planting, and more specifically, to a method for preventing and controlling weeds in a field where schizonepeta proliferates. Background Art

[0002] Lespedeza potaninii, also known as Niu Lizi and Niu Jinzi, is a plant of the genus Lespedeza in the Leguminosae family. It is widely distributed in desert steppes and arid grasslands. Lespedeza potaninii is the most drought-resistant species in the genus Lespedeza. It can survive in arid areas with annual precipitation of less than 150 mm. It is a dominant low-growing, strong drought-tolerant, small semi-shrub species in desert steppes in Xinjiang, Inner Mongolia, Ningxia and other places. Lespedeza potaninii is an excellent leguminous forage grass. It likes to be eaten by cattle and sheep in grassland areas. It is one of the main forage grass species in pastoral areas. From the perspective of biodiversity, ecosystem multifunctionality and multi-service, and ecosystem stability, Lespedeza potaninii is an important choice for near-natural restoration of severely degraded desert steppes. The biggest bottleneck currently encountered in near-natural restoration is that there are no or few native superior grass species. The ecological restoration of severely degraded grasslands in Ningxia Yanchi desert steppes also faces the same problem. Research on weed control technology in breeding fields, as an important part of the integrated breeding technology of Lespedeza potaninii, is particularly urgent and important.

[0003] At present, weed control mainly adopts chemical weed control measures, which can effectively solve the harm of weeds to crops, greatly reduce the weed control cost and labor cost of agricultural production, and promote the development of agricultural production. Herbicides exert their physiological and biochemical effects through plant absorption. Weeds have non-target resistance to herbicides, including herbicide absorption, translocation, sequestration and metabolism, which interferes with plant metabolism and causes their death. Herbicides are divided into selective herbicides, lethal herbicides, systemic herbicides, contact herbicides, stem and leaf treatment agents, soil treatment agents, etc. according to different classification methods. Among them, soil sealing treatment before seedling is the focus of chemical weed control, which can significantly reduce the occurrence base of weeds in the field and effectively reduce the pressure of stem and leaf spray weeding in the later stage. However, once the herbicide is improperly selected and applied and used Technical problems will cause herbicides to cause serious damage to crops. The use of herbicides with long residual periods will also harm the production of subsequent crops and cause losses. In mild cases, growth inhibition and yield reduction will occur, while in severe cases, seedling death and crop failure will occur. During the planting period of taro, there are several important periods: (1) Seedling stage: the period when the two true leaves are fully expanded; (2) Three-leaf stage: when the three leaves of the first compound leaf are fully expanded; (3) Five-leaf stage: refers to the period when the first compound leaf is fully expanded, the fourth and fifth leaves of the second compound leaf are fully expanded, and the sixth leaf is smaller. The means and effects of weed control at different stages of taro growth are different. The effect of weed control is mainly examined in terms of plant control effect and fresh weight control effect. The plant control effect investigates the total number of surviving weeds, reflecting the killing effect of the agent on weeds, and the fresh weight control effect investigates the weight of surviving weeds, reflecting the inhibitory effect of the agent on weed growth. After searching through various channels, it was found that no scholar in China has conducted research on integrated technology for weed control in fields with a high abundance of Rhizoma Coptidis, and there is a lack of one or more compound pesticide combinations with better weed control effects in fields with a high abundance of Rhizoma Coptidis. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] Another object of the present invention is to provide a method for controlling weeds in fields where Coix lacryma-jobi is abundant, which has a better weed control effect on fields where Coix lacryma-jobi is abundant, and provides integrated technical support for weed control for large-scale planting and production of Coix lacryma-jobi.

[0006] In order to achieve these purposes and other advantages of the present invention, a method for controlling weeds in a field of schizonepeta tenuifolia is provided, comprising the step of spraying a compound pesticide on the stems and leaves of schizonepeta tenuifolia for the first time during the three-leaf stage, wherein the compound pesticide and the dosage are 150-210 mL / mu of 5% imazethapyr, 50-70 mL / mu of 158 g / L high-efficiency flupyramide and 50-70 mL / mu of 440 g / L fluazifop-butyl, wherein the fluazifop-butyl and bentazone include 50 g / L trifluorfen and 360 g / L bentazone.

[0007] Preferably, the compound pesticide and dosage are 5% imazethapyr 180 mL / mu, 158 g / L high-efficiency fluazifop-p-ethyl 60 mL / mu and 440 g / L fluazifop-p-ethyl 60 mL / mu.

[0008] Preferably, the method for controlling weeds in the field where the Rhizoma Coptidis is grown also includes a step of sealing the soil before sowing, specifically: watering the soil before sowing the Rhizoma Coptidis seeds, applying 100-140 mL / mu of 5% imidacloprid after watering, and then sowing after the surface is suitable for sowing.

[0009] Preferably, the method for controlling weeds in a field where Corydalis truncatula is grown also includes a step of processing Corydalis truncatula seeds, specifically: evenly rolling the Corydalis truncatula seeds 2 to 4 times.

[0010] Preferably, the method for controlling weeds in a field where Caulis dahurica is grown also includes the step of soaking the crushed Caulis dahurica seeds in a 0.01-0.2 mg / mL Lentinan solution for 10-30 min.

[0011] Preferably, the method for controlling weeds in the field of schizonepeta prostrata further comprises the steps of watering 20 to 25 days after the first spraying of the compound pesticide, and supplementing with one or more of 5% imazethapyr, 158 g / L high-efficiency halpyralid and 440 g / L fluazifop-butyl 15 to 20 days after watering, wherein:

[0012] When the average plant height of Fengdi Niuzhizi is less than 2.5cm:

[0013] If the weed control efficiency is less than 85%, apply 5% imazethapyr 100-140mL / mu, 158g / L high-efficiency halpyr-methyl 10-30mL / mu and 440g / L fluazifop-methyl 10-30mL / mu;

[0014] If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 100-140mL / mu and 158g / L high-efficiency halpyr-methyl 10-30mL / mu.

[0015] If the weed control efficiency is ≥88%, apply 5% imazethapyr 100-140mL / mu;

[0016] When 2.5cm≤average plant height of Fengdi Niuzhizi<3.0cm:

[0017] If the weed control efficiency is less than 85%, apply 5% imazethapyr 50-70 mL / mu, 158g / L high-efficiency halpyr-methyl 10-30 mL / mu and 440g / L fluazifop-bentazone 10-30 mL / mu.

[0018] If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 50-70 mL / mu and 158g / L high-efficiency fluorine 10-30 mL / mu;

[0019] If the weed control efficiency is ≥88%, apply 5% imazethapyr 50-70 mL / mu;

[0020] When the average plant height of Fengdi Niuzhizi is ≥3.0cm:

[0021] If the weed control efficiency is less than 85%, apply 5% imazethapyr 20-40 mL / mu, 158g / L high-efficiency halpyr-methyl 10-30 mL / mu and 440g / L fluazifop-methyl 10-30 mL / mu;

[0022] If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 20-40mL / mu and 158g / L high-efficiency halpyr-methyl 10-30mL / mu.

[0023] If the weed control efficiency is ≥88%, apply 5% imidacloprid 20-40 mL / mu.

[0024] In the above preferred technical scheme, the method for weed control in the field of schisandra chinensis further includes irrigating 20 to 25 days after the first spraying of the compound pesticide to cooperate with the water and fertilizer management measures for schisandra chinensis. After 15 to 20 days of irrigation, in addition to the uncontrolled weeds, there are new weeds in the schisandra chinensis field, but the overall impact of weeds is much lower than the first spraying of the compound pesticide, because the overall amount of supplementary application is lower than the first amount. In the process of supplementary application, it is necessary to fully consider the growth state of schisandra chinensis and the weed control effect of the first spraying of the compound pesticide, among which the growth state of schisandra chinensis is the priority influencing factor. Through experiments, 5% imidacloprid has the least effect on the plant height of schisandra chinensis, and 5% imidacloprid has the least effect on the plant height of schisandra chinensis. The lower the height of the seedling, the greater the proportion of 5% imidacloprid in the compound pesticide for supplementary application. At the same time, with the improvement of the weed control effect of the compound pesticide after the first spraying, the types of compound pesticides in the supplementary application are gradually reduced. When the weed control effect is ≥88% after the first spraying of the compound pesticide, only 5% imidacloprid can be used for supplementary application. When the weed control effect is 85%≤<88% after the first spraying of the compound pesticide, a compound pesticide of 5% imidacloprid and high-efficiency fluazifop-methyl is used for supplementary application. When the weed control effect is <85% after the first spraying of the compound pesticide, a compound pesticide of 5% imidacloprid, high-efficiency fluazifop-methyl and fluazifop-methyl is used for supplementary application.

[0025] The present invention has at least the following beneficial effects:

[0026] First, the present invention provides a weed control method for the field of schizonepeta multiflora for the first time, which is suitable for the field of schizonepeta multiflora in Ningxia, effectively ensuring the smooth emergence and wintering of schizonepeta multiflora, and laying a foundation for the large-scale planting and production of schizonepeta;

[0027] Second, the method for preventing and controlling weeds in the field of schizonepeta multiflora provided by the present invention comprises the steps of soil sealing, seed treatment, and stem and leaf treatment, wherein the present invention selects 5% imidacloprid as a highly effective herbicide for soil sealing in the field of schizonepeta multiflora during the planting year, which not only ensures a low death rate of schizonepeta multiflora, but also ensures the fresh weight control effect of weeds in the field of schizonepeta multiflora;

[0028] Third, the treatment of seeds in the method for controlling weeds in the field of schizonepeta multiflora provided by the present invention includes a mechanical rolling step and a lentinan soaking step, wherein the mechanical rolling step not only removes the seed coat of the schizonepeta seeds, but also destroys 10-20% of the wax layer on the surface of the schizonepeta seeds, so that the schizonepeta seeds can normally absorb moisture and nutrients in the soil when germinating, thereby improving the germination rate of the schizonepeta seeds; the present invention proposes for the first time that the schizonepeta seeds after soaking and rolling are soaked in lentinan, so that the seeds have good drug resistance and disease resistance after germination, laying a foundation for further stem and leaf treatment;

[0029] Fourthly, in the method for controlling weeds in the field of schizonepeta multiflora provided by the present invention, a compound pesticide is selected for stem and leaf treatment, wherein the compound pesticide is 5% imidacloprid, 158g / L high-efficiency haloxyfop-butyl and 440g / L fluazifop-butyl. The preferred weight ratio of 5% imidacloprid, 158g / L high-efficiency haloxyfop-butyl and 440g / L fluazifop-butyl is 3:1:1, and the application period of the compound pesticide is the three-leaf stage of schizonepeta. The compound pesticide selected by the present invention has the advantages of fast killing, strong systemic absorption, high safety to schizonepeta, high fresh weight control effect on weeds and low cost;

[0030] Fifth, the method for controlling weeds in the field of schizonepeta multiflora provided by the present invention also includes a supplementary application step, in which the soil is irrigated 20 to 25 days after the stem and leaf treatment of schizonepeta, and the soil is irrigated, taking into account the characteristics of fertile soil but little precipitation in Ningxia, taking into account the field fertilizer and water management, and supplementary application of weeds that grow again after irrigation. The present invention further combines the height of schizonepeta and the effect of the first application of medicine, and provides scientific supplementary application types and dosages;

[0031] Sixth, the method for controlling weeds in the field of Codonopsis pilosula provided by the present invention can effectively prevent the infection and harm of parasitic weeds as a whole. The fresh weight control effect of weeds can reach more than 90% 30 days after the first application of the pesticide and there is no significant difference.

[0032] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with specific embodiments so that those skilled in the art can implement the invention with reference to the description.

[0034] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0035] Selection of experimental site: The experimental site is located in Sidunzi Science and Technology Innovation Base, Yanchi County, Ningxia Hui Autonomous Region, with geographical coordinates of 37°46'N, 107°28'E. The experimental site is divided into small plots, each with an area of ​​24m 2 During the experiment, the field fertilizer and water management measures of the experimental site remained consistent.

[0036] The test site is located in Yanchi County, which has little precipitation and belongs to the agricultural and pastoral transition zone. The average annual precipitation is 282.3mm, and the precipitation is mostly concentrated in July to September each year, accounting for more than 64% of the annual precipitation, and the annual evaporation is 2131.7mm; the absolute frost-free period is about 124d, the relative frost-free period is 165d, the annual accumulated temperature ≥0℃ is 3811.7℃, the annual accumulated temperature ≥10℃ is 3436.06℃, the annual sunshine hours are 2346.82h, and the annual average temperature is 9.1℃.

[0037] Experimental materials: Imidazolin, purchased from Shenyang Kechuang Chemical Co., Ltd.; high-efficiency fluazifop-butyl, purchased from Shenyang Hotan Chemical Co., Ltd.; fluazifop-butyl, purchased from Hefei Xingyu Chemical Co., Ltd.; isopropylamine, purchased from Hangzhou Yingtai Biotechnology Co., Ltd.; isopropylamine, purchased from Syngenta (Suzhou) Crop Protection Co., Ltd.; flufenac, purchased from Shandong Shengbang Lvye Chemical Co., Ltd.; butofenol, purchased from Jiangxi Dunpai Chemical Co., Ltd.; quinol-flusulfuron, purchased from Hefei Xingyu Chemical Co., Ltd.; fluazifop-butyl, purchased from Qingdao Modern Agriculture Co., Ltd.; triclopyr, purchased from Jilin Yanbian Tianbao Biological Preparation Co., Ltd.

[0038] Example 1

[0039] Three test plots were randomly selected for planting Coix lacryma-jobi. The weed control method for Coix lacryma-jobi fields included spraying the compound pesticide on the stems and leaves for the first time when the Coix lacryma-jobi was in the three-leaf stage. The compound pesticide and its dosage were 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency flupyramide and 60 mL / mu of 440 g / L fluazifop-butyl. No control measures were taken at other times during the Coix lacryma-jobi planting period.

[0040] Example 2

[0041] Three test plots were randomly selected for planting Coix lacryma-jobi. The weed control method for Coix lacryma-jobi fields included spraying the compound pesticide on the stems and leaves for the first time during the three-leaf stage of Coix lacryma-jobi. The compound pesticide and its dosage were 150 mL / mu of 5% imazethapyr, 50 mL / mu of 158 g / L high-efficiency flupyramide and 50 mL / mu of 440 g / L fluazifop-butyl. No control measures were taken at other times during the Coix lacryma-jobi planting period.

[0042] Example 3

[0043] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0044] Step 1: Soil sealing: After irrigating the soil of the test plot for 4 days, apply 5% imidacloprid 150 mL / mu, and wait until the surface of the test plot is suitable for sowing;

[0045] Step 2, stem and leaf treatment: spray the stem and leaves of the taro for the first time at the three-leaf stage, the compound pesticide is 5% imazethapyr 180mL / mu, 158g / L high-efficiency halpyrazole 60mL / mu and 440g / L fluazifop-butyl 60mL / mu;

[0046] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0047] Example 4

[0048] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0049] Step 1: Soil sealing: After irrigating the soil of the test plot for 4 days, apply 5% imidacloprid 150 mL / mu, and wait until the surface of the test plot is suitable for sowing;

[0050] Step 2, treatment of schizonepeta seeds: using wild schizonepeta as a cultivar, mechanically rolling the wild schizonepeta seeds three times, at which time the wild schizonepeta seeds become hot but not scalding, not only removing the seed coat of the schizonepeta seeds, but also destroying 10-20% of the wax layer on the surface of the schizonepeta seeds;

[0051] Step 3, stem and leaf treatment: spray the stem and leaves of the taro for the first time at the three-leaf stage, the compound pesticide is 5% imazethapyr 180mL / mu, 158g / L high-efficiency halpyrazole 60mL / mu and 440g / L fluazifop-butyl 60mL / mu;

[0052] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0053] Example 5

[0054] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0055] Step 1: Soil sealing: After irrigating the soil of the test plot for 4 days, apply 5% imidacloprid 150 mL / mu, and wait until the surface of the test plot is suitable for sowing;

[0056] Step 2, treatment of schizonepeta seeds: using wild schizonepeta as a cultivated variety, mechanically rolling the wild schizonepeta seeds three times, at which time the wild schizonepeta seeds are heated but not scalded, not only removing the seed coat of the schizonepeta seeds, but also destroying 10-20% of the wax layer on the surface of the schizonepeta seeds; further soaking the rolled schizonepeta seeds in a 0.1 mg / mL lentinan solution for 20 minutes;

[0057] Step 3, stem and leaf treatment: spray the stem and leaves of the taro for the first time at the three-leaf stage, the compound pesticide is 5% imazethapyr 180mL / mu, 158g / L high-efficiency halpyrazole 60mL / mu and 440g / L fluazifop-butyl 60mL / mu;

[0058] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0059] Example 6

[0060] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0061] Step 1: Soil sealing: After irrigating the soil of the test plot for 4 days, apply 5% imidacloprid 150 mL / mu, and wait until the surface of the test plot is suitable for sowing;

[0062] Step 2, treatment of schizonepeta seeds: using wild schizonepeta as a cultivated variety, mechanically rolling the wild schizonepeta seeds three times, at which time the wild schizonepeta seeds are heated but not scalded, not only removing the seed coat of the schizonepeta seeds, but also destroying 10-20% of the wax layer on the surface of the schizonepeta seeds; further soaking the rolled schizonepeta seeds in a 0.1 mg / mL lentinan solution for 20 minutes;

[0063] Step 3, stem and leaf treatment: spray the stem and leaves of the taro for the first time at the three-leaf stage, the compound pesticide is 5% imazethapyr 180mL / mu, 158g / L high-efficiency halpyrazole 60mL / mu and 440g / L fluazifop-butyl 60mL / mu;

[0064] Step 4: Irrigate and apply additional pesticides: Irrigate 20-25 days after the first spraying of the compound pesticide. 20 days after irrigation, apply one or more of 5% imazethapyr, 158g / L high-efficiency halpyrazole and 440g / L fluazifop-butyl, specifically:

[0065] When the average plant height of Fengdi Niuzhizi is less than 2.5cm:

[0066] If the weed control efficiency is less than 85%, apply 5% imazethapyr 100-140mL / mu, 158g / L high-efficiency halpyr-methyl 10-30mL / mu and 440g / L fluazifop-methyl 10-30mL / mu;

[0067] If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 100-140mL / mu and 158g / L high-efficiency halpyr-methyl 10-30mL / mu.

[0068] If the weed control efficiency is ≥88%, apply 5% imazethapyr 100-140mL / mu;

[0069] When 2.5cm≤average plant height of Fengdi Niuzhizi<3.0cm:

[0070] If the weed control efficiency is less than 85%, apply 5% imazethapyr 50-70 mL / mu, 158g / L high-efficiency halpyr-methyl 10-30 mL / mu and 440g / L fluazifop-bentazone 10-30 mL / mu.

[0071] If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 50-70 mL / mu and 158g / L high-efficiency fluorine 10-30 mL / mu;

[0072] If the weed control efficiency is ≥88%, apply 5% imazethapyr 50-70 mL / mu;

[0073] When the average plant height of Fengdi Niuzhizi is ≥3.0cm:

[0074] If the weed control efficiency is less than 85%, apply 5% imazethapyr 20-40 mL / mu, 158g / L high-efficiency halpyr-methyl 10-30 mL / mu and 440g / L fluazifop-methyl 10-30 mL / mu;

[0075] If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 20-40mL / mu and 158g / L high-efficiency halpyr-methyl 10-30mL / mu.

[0076] If the weed control efficiency is ≥88%, apply 5% imazethapyr 20-40mL / mu;

[0077] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0078] Comparative Example 1

[0079] Three experimental plots were randomly selected for planting of Rhizoma Corydalis, and no prevention and control measures were taken for Rhizoma Corydalis.

[0080] Comparative Example 2

[0081] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0082] Step 1: Soil sealing: 4 days after irrigating the soil of the test plot, apply 960g / L isopropylamine in the amount recommended in the instructions for use (100mL / mu), and wait until the surface of the test plot is suitable for sowing;

[0083] Step 2: Same as Example 6;

[0084] Step 3, same as Example 6;

[0085] Step 4: Same as Example 6;

[0086] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0087] Comparative Example 3

[0088] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0089] Step 1: Soil sealing: 4 days after irrigating the soil of the test plot, apply 480g / L trifluralin according to the recommended dosage in the instructions for use of the drug (150mL / mu), and wait until the surface of the test plot is suitable for sowing;

[0090] Step 2: Same as Example 6;

[0091] Step 3, same as Example 6;

[0092] Step 4: Same as Example 6;

[0093] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0094] Comparative Example 4

[0095] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0096] Step 1: Soil sealing: 4 days after irrigating the soil in the test plot, apply 960g / L S-Isopropylamine in the amount recommended in the instructions for use (120mL / mu), and wait until the surface of the test plot is suitable for sowing;

[0097] Step 2: Same as Example 6;

[0098] Step 3, same as Example 6;

[0099] Step 4: Same as Example 6;

[0100] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0101] Comparative Example 5

[0102] Three experimental plots were randomly selected for planting of truncatum chinense. The weed control methods for truncatum chinense breeding fields include:

[0103] Step 1: Soil sealing: 4 days after irrigating the soil of the test plot, apply 48% butralin according to the recommended dosage in the instructions for use of the drug (150 mL / mu), and wait until the surface of the test plot is suitable for sowing;

[0104] Step 2: Same as Example 6;

[0105] Step 3, same as Example 6;

[0106] Step 4: Same as Example 6;

[0107] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0108] Comparative Example 6

[0109] Step 1, same as Example 6;

[0110] Step 2: Same as Example 6;

[0111] Step 3, stem and leaf treatment: spray the stems and leaves of the sedge seedlings for the first time with a compound pesticide, wherein the compound pesticide and dosage are 5% imazethapyr 180 mL / mu, 158 g / L high-efficiency halpyrazole 60 mL / mu and 440 g / L fluazifop-butyl 60 mL / mu;

[0112] Step 4: Same as Example 6;

[0113] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0114] Comparative Example 7

[0115] Step 1, same as Example 6;

[0116] Step 2: Same as Example 6;

[0117] Step 3, stem and leaf treatment: spray the stem and leaves of the taro for the first time at the five-leaf stage, the compound pesticide and the dosage of the compound pesticide are 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency halpyrazole and 60 mL / mu of 440 g / L fluazifop-butyl;

[0118] Step 4: Same as Example 6;

[0119] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0120] Comparative Example 8

[0121] Step 1, same as Example 6;

[0122] Step 2: Same as Example 6;

[0123] Step 3, stem and leaf treatment: spray the stems and leaves with a compound pesticide for the first time at the three-leaf stage of the cowpea, wherein the compound pesticide and dosage are 180 mL / mu of 5% imazethapyr, 60 mL / mu of high-efficiency fluazifop-p-butyl and 100 mL / mu of quinacridone (the dosage recommended in the instructions for use of the agent), wherein the quinacridone includes 6% quizalofop-p-butyl and 16% fomesafen;

[0124] Step 4: Same as Example 6;

[0125] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0126] Comparative Example 9

[0127] Step 1, same as Example 6;

[0128] Step 2: Same as Example 6;

[0129] Step 3, stem and leaf treatment: spray the stems and leaves with compound pesticides for the first time at the three-leaf stage of the cowpea, the compound pesticides and dosages are 5% imazethapyr 180 mL / mu, 158 g / L high-efficiency flupyralid 60 mL / mu and 480 g / L trichlorofluoropyralid 400 mL / mu (the dosage recommended in the instructions for use of the pesticides);

[0130] Step 4: Same as Example 6;

[0131] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0132] Comparative Example 10

[0133] Step 1, same as Example 6;

[0134] Step 2: Same as Example 6;

[0135] Step 3, stem and leaf treatment: spray the stems and leaves of the taro for the first time at the three-leaf stage, the compound pesticide and the dosage are 5% imazethapyr 180mL / mu, 158g / L high-efficiency fluazifop-butyl 60mL / mu and 10% fluazifop-butyl 60mL / mu (the dosage recommended in the instructions for use of the pesticide);

[0136] Step 4: Same as Example 6;

[0137] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0138] Comparative Example 11

[0139] Step 1, same as Example 6;

[0140] Step 2: Same as Example 6;

[0141] Step 3, stem and leaf treatment: spray the stem and leaves of the taro for the first time at the three-leaf stage, the compound pesticide and the dosage of the compound pesticide are 120 mL / mu of 5% imazethapyr, 40 mL / mu of 158 g / L high-efficiency halpyrazole and 40 mL / mu of 440 g / L fluazifop-butyl;

[0142] Step 4: Same as Example 6;

[0143] No prevention and control measures are taken at other times during the planting period of Rhizoma Cistanches.

[0144] Comparative Example 12

[0145] Three test plots were randomly selected for planting of schizonepeta tenuifolia. The weed control method for schizonepeta tenuifolia breeding fields included spraying the stems and leaves with a compound pesticide for the first time during the schizonepeta tenuifolia seedling stage. The compound pesticide and dosage were 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency halpyr-methyl and 60 mL / mu of 440 g / L fluazifop-butyl;

[0146] Other prevention and control measures are the same as in Example 1.

[0147] Comparative Example 13

[0148] Three test plots were randomly selected for planting of schizonepeta tenuifolia. The weed control method for schizonepeta tenuifolia fields included spraying the stems and leaves of schizonepeta tenuifolia for the first time at the five-leaf stage. The compound pesticide and dosage were 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency halpyr-methyl and 60 mL / mu of 440 g / L fluazifop-butyl;

[0149] Other prevention and control measures are the same as in Example 1.

[0150] Comparative Example 14

[0151] Three test plots were randomly selected for planting of cyperus rotundus, and the stems and leaves were sprayed with a compound pesticide for the first time when the cyperus rotundus was in the three-leaf stage. The compound pesticide and dosage were 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency fluazifop-p-butyl, and 100 mL / mu of quinacridone·flusulfuron (the dosage recommended in the instructions for use of the agent), and the quinacridone·flusulfuron included 6% quizalofop-p-butyl and 16% fomesafen-butyl;

[0152] Other prevention and control measures are the same as in Example 1.

[0153] Comparative Example 15

[0154] Three test plots were randomly selected for planting of cyperus rotundus, and the stems and leaves were sprayed with compound pesticides for the first time when the cyperus rotundus was in the three-leaf stage. The compound pesticides and dosages were 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency flupyralid, and 400 mL / mu of 480 g / L trichloropyr (the dosage recommended in the instructions for use of the pesticides);

[0155] Other prevention and control measures are the same as in Example 1.

[0156] Comparative Example 16

[0157] Three test plots were randomly selected for planting of cyperus rotundus, and the stems and leaves were sprayed with compound pesticides for the first time when the cyperus rotundus was in the three-leaf stage. The compound pesticides and dosages were 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency fluazifop-butyl, and 60 mL / mu of 10% fluazifop-butyl (the dosage recommended in the instructions for use of the pesticides);

[0158] Other prevention and control measures are the same as in Example 1.

[0159] In Examples 1 to 6 and Comparative Examples 1 to 16, Examples 1 and 2 use the compound pesticide screened by the present invention to control weeds in the field where the Cistanche deserticola is grown at the three-leaf stage, and the only difference is the difference in the amount of the compound pesticide used; Example 3 further adds a soil sealing control measure on the basis of Example 1, and the soil sealing uses the pesticide screened by the present invention; Example 4 further adds a Cistanche deserticola seed treatment control measure on the basis of Example 3, and the Cistanche deserticola seed treatment method is mechanical rolling; Example 5 further adds a control measure of soaking in a lentinan polysaccharide solution on the basis of Example 4; Example 6 further adds a control measure of supplementary application on the basis of Example 5.

[0160] Comparative Example 1 is a blank control group in which no control measures are adopted; the difference between Comparative Example 2 and Example 6 is that Comparative Example 2 uses isopropyl metolachlor for soil sealing; the difference between Comparative Example 3 and Example 6 is that Comparative Example 3 uses trifluralin for soil sealing; the difference between Comparative Example 4 and Example 6 is that Comparative Example 4 uses s-isopropyl metolachlor for soil sealing; the difference between Comparative Example 5 and Example 6 is that Comparative Example 6 uses chlorpyrifos for soil sealing; the difference between Comparative Example 6 and Example 6 is that Comparative Example 6 uses the compound pesticide screened by the present invention for stem and leaf treatment at the seedling stage; the difference between Comparative Example 7 and Example 6 is that Comparative Example 7 uses the compound pesticide screened by the present invention for stem and leaf treatment at the five-leaf stage The compound pesticide selected by the present invention is used for stem and leaf treatment; the difference between Comparative Example 8 and Example 6 is that Comparative Example 8 uses imazethapyr, high-efficiency fluazifop-butyl and quinquinol·flusulfuron for stem and leaf treatment at the three-leaf stage; the difference between Comparative Example 9 and Example 6 is that Comparative Example 9 uses imazethapyr, high-efficiency fluazifop-butyl and trichloroflupyr for stem and leaf treatment at the three-leaf stage; the difference between Comparative Example 10 and Example 6 is that Comparative Example 10 uses imazethapyr, high-efficiency fluazifop-butyl and fluazifop-butyl for stem and leaf treatment; the difference between Comparative Example 11 and Example 6 is that Comparative Example 11 uses the compound pesticide selected by the present invention for stem and leaf treatment, but the application amount of the compound pesticide is reduced.

[0161] Comparative Examples 12 to 16 are comparative tests for Example 1. The only difference between Comparative Example 12 and Example 1 is that Comparative Example 12 uses the compound pesticide screened by the present invention for stem and leaf treatment at the seedling stage; the only difference between Comparative Example 13 and Example 1 is that Comparative Example 13 uses the compound pesticide screened by the present invention for stem and leaf treatment at the five-leaf stage; the only difference between Comparative Example 14 and Example 1 is that Comparative Example 14 uses imazethapyr, high-efficiency fluazifop-butyl and quinoline·flusulfuron for stem and leaf treatment at the three-leaf stage; the only difference between Comparative Example 15 and Example 1 is that Comparative Example 15 uses imazethapyr, high-efficiency fluazifop-butyl and trichloroflupyr for stem and leaf treatment at the three-leaf stage; the only difference between Comparative Example 16 and Example 1 is that Comparative Example 16 uses imazethapyr, high-efficiency fluazifop-butyl and fluazifop-butyl for stem and leaf treatment.

[0162] Investigation on weed composition in the experimental field of taro: All the weeds in the experimental field of taro without pesticide treatment were registered (a total of 20 species), and the weeds in the experimental field of taro were numbered: 1. Shepherd's purse, Latin name Capsellabursa-pastoris; 2. Chickweed, Latin name Stellaria media (L.) Cyr.; 3. Chenopodiumalbum L.; 4. Chenopodium glaucum L.; 5. Amaranthus retroflexus L.; 6. Portulaca oleracea L.; 7. Convolvulus arvensis L.; 8. Calystegia hederacea Wall.; 9. Lactuca mongholicus, Latin name Lactucatatarica (L.) CAmey.; 10. Cirsium setosum; 11. Solanum nigrum L.; 12. Descurainiasophia (L.) Webb ex Prantl; 13. Galinsoga parviflora Cav.; 14. Senecio dubitabilis C. Jeffrey & Y.L. Chen; 15. Poa annua L.; 16. Digitaria sanguinalis (L.) Scop.; 17. Leymus secalinus (Georgi) Tzvelev; 18. Oxalis corniculata L.; 19. Salsola kalis (Kali collinum (Pall.) Akhani & Roalson); 20. Hibiscus trionum L.

[0163] The soil sealing effects of Example 6 and Comparative Examples 1 to 5 were compared, and the results are shown in Table 1.

[0164] Table 1 Soil sealing effect of different fiefdoms

[0165]

[0166]

[0167] Note: Sealing effect on weeds means √, no sealing effect means 0; Sealing effect means that the herbicide forms a film on the soil surface, and the weed buds, seedlings or roots are killed after they come into contact with and absorb the herbicide; no sealing effect means that although the herbicide forms a film on the soil surface, the weed buds, seedlings or roots cannot be killed after they come into contact with and absorb the herbicide.

[0168] Further comparison was made between Example 6 and Comparative Examples 1 to 5 on the safety of Rhizoma Cistanches and the fresh weight of weeds in the field after 60 days of application. The results are shown in Table 2.

[0169] Table 2 Effect of pesticide application on the safety of Rhizoma Cistanches and fresh weight of weeds in different plots after 60 days of application

[0170]

[0171] Note: Different lowercase letters in the table indicate significant differences, i.e. P<0.05.

[0172] It can be seen from the data in Table 1 that there are a total of 20 kinds of field weeds in the test field of Niuzhizi. Comparative Examples 2 to 5 and Example 6 were sprayed with 5 kinds of sealing drugs, namely, isopropylamine, trifluralin, propiachlor, butralin, and imazethapyr, and the number of weeds blocked was 6, 8, 12, 13, and 13 respectively (see Table 1 for details). The number of weeds blocked by the sealing drugs provided in Comparative Example 5 and Example 6 was relatively high, both of which were 13 kinds.

[0173] The damage degree to the seedlings of Rhizoma Coptidis (the mortality rate of Rhizoma Coptidis seedlings), the effect on the plant height of Rhizoma Coptidis, and the control effect on the fresh weight of weeds in the field of Rhizoma Coptidis after the use of various pesticides for soil sealing were further investigated. From the statistical data analysis results of Table 2, Example 6 has the least damage to the Rhizoma Coptidis seedlings, and the mortality rate of Rhizoma Coptidis seedlings is zero, while Comparative Examples 2 to 5 are all harmful to the Rhizoma Coptidis seedlings, and the mortality rate of the sealing drug used in Comparative Example 2 is even as high as 80% or more. Therefore, from the perspective of the safety of Rhizoma Coptidis seedlings, the sealing drug provided by the present invention has good safety for Rhizoma Coptidis seedlings; from the perspective of the effect on the plant height of Rhizoma Coptidis, there is no significant difference in plant height between Example 6 and Comparative Example 1 (control group), which shows that the sealing drug selected in Example 6 has little effect on the plant height of Rhizoma Coptidis, while the plant height of Comparative Examples 2 to 5 is Compared with Comparative Example 1 (control group), the plant heights of the Rhizoma Coptidis in Comparative Examples 2 to 5 are significantly lower than that of Comparative Example 1. It can be seen that the enclosing drugs used in Comparative Examples 2 to 5 have an adverse effect on the plant height of the Rhizoma Coptidis. In terms of the effect on the plant height of the Rhizoma Coptidis, the enclosing drugs provided in the present application have less effect on the plant height of the Rhizoma Coptidis. In terms of the fresh weight control effect on weeds, the fresh weight control effect of Example 6 can reach 94.34%, while the fresh weight control effect of Comparative Examples 2 to 5 on weeds is relatively poor, and the fresh weight control effect of Comparative Example 3 on weeds is only 72.33%. Therefore, the enclosing drugs provided by the present invention have an ideal fresh weight control effect on weeds. In summary, combined with the number of blocked weed species, the degree of damage to the Corydalis chinensis seedlings and the weed control effect, the present invention screened 5% imidacloprid as the soil sealing agent for Corydalis chinensis. The use of 5% imidacloprid can not only block a variety of weeds, but also minimize the degree of damage to the Corydalis chinensis seedlings, and can also play a positive role in the control of the fresh weight of weeds in the Corydalis chinensis field.

[0174] By comparing Example 6, Comparative Example 6, Comparative Example 7 and Comparative Example 11, Example 1, Comparative Example 12 and Comparative Example 13, the weed control effect of Rhizoma Corydalis on the field at different periods and different dosages was investigated, and the results are shown in Table 3.

[0175] Table 3 Effect of different periods and different dosages on the control of Cnidium officinale weeds

[0176]

[0177] Note: ++++Safety is manifested by the withering of all (or most) plants; +++Safety is manifested by the withering of some plants, seriously affecting plant growth; ++Safety is manifested by weak and yellow plants, inhibiting plant growth; +Safety is manifested by normal leaves or slightly yellow leaves on the top, with no effect on growth.

[0178] It can be seen from Table 3 that the safety level of the compound pesticide screened by the present invention and the dosage when applied in the seedling stage of Coptis chinensis is ++ (Comparative Example 6 and Comparative Example 12 show the same rule), and the safety to Coptis chinensis is poor, so the application of the compound pesticide screened by the present invention and the dosage when applied in the seedling stage is excluded. However, the safety of the compound pesticide screened by the present invention when applied in the three-leaf stage and the five-leaf stage is improved by one level (Comparative Example 7, Comparative Example 11, Comparative Example 13, Example 1 and Example 6 show the same rule), and the safety level is +, so the application of the pesticide in the seedling stage of Coptis chinensis is excluded.

[0179] Further investigation of the statistical data of plant control effect and fresh weight control effect shows that, compared with comparative examples 7 to 11, the application period and application amount adopted in Example 6 are the best choices, and the plant control effect and fresh weight control effect after 30 days of application are both the largest, 85.73% and 91.14%, respectively. Compared with comparative example 13, the application period adopted in Example 1 is also the best choice, and the plant control effect and fresh weight control effect after 30 days of application are both the largest, 77.60% and 89.51%, respectively. At the same time, compared with the data of Example 1, Example 6 adds the prevention and control measures screened by this application, which has a positive effect on the weed control in the field of the breeding of cowpea.

[0180] Comparing Example 6 and Comparative Examples 8 to 10, the safety of different combinations of agents on Rhizoma Cistanches and the control effects of weeds in the field are investigated as shown in Table 4.

[0181] Table 4 Safety of different combinations of pesticides on Cnidium monnieri and their weed control effects in the field

[0182]

[0183] It can be seen from the data in Table 4 that according to the safety observations 10d, 20d and 60d after application in different test plots in Examples 6 and Comparative Examples 8 to 10, Comparative Examples 9 and 15 both use imazethapyr, fluazifop-ethyl and triclopyrazone compound pesticides, and their safety for cowpea is that all (or most) plants die (++++), so the subsequent plant control effect and fresh weight control effect are no longer measured, and the compound pesticides provided in Comparative Examples 9 and 15 are excluded for stem and leaf treatment.

[0184] Comparative Examples 10 and 16 use compound pesticides of imidacloprid, high-efficiency fluazifop-butyl and fluazifop-butyl, and their safety performance on the growth of Coix lacryma-feta is ++, and the safety to Coix lacryma-feta is still poor, so the use of this compound pesticide to treat Coix lacryma-feta is excluded. The safety performance of Comparative Examples 8, 14, Example 1 and Example 6 on Coix lacryma-feta is that the leaves are normal or the top leaves are slightly yellow, and there is no effect on growth (+), indicating that Comparative Examples 8 and 14 use imidacloprid, high-efficiency fluazifop-butyl and quinquin·flusulfuron, and Example 1 and Example 6 use imidacloprid, high-efficiency fluazifop-butyl and fluazifop-butyl, and the safety of Coix lacryma-feta ...

[0185] Further from the statistical analysis data of the plant control effect and the fresh weight control effect, it can be seen from the comparison of the data of Comparative Example 8 and Example 6 that when other prevention and control measures are the same, relative to Comparative Example 8, 10 days after the drug and 20 days after the drug, the control effect of Example 6 on the field weeds of the cow twig was the highest, 75.37% and 78.85%, respectively. After 10 days and 20 days after the drug, the control effect of Comparative Example 8 on the field weeds of the cow twig was 62.83% and 73.52%, respectively. Compared with the compound pesticide provided in Comparative Example 8, the compound pesticide provided in Example 6 showed a better control effect of the field weeds of the cow twig at 10 days and 20 days after the drug; 60 days after the drug, the fresh weight control effect of the compound pesticides provided in Example 6 and Comparative Example 8 on the field weeds of the cow twig was 94.34% and 88.38%, respectively, that is, 60 days after the drug, the compound pesticide and dosage provided in Example 6 showed a better control effect of the fresh weight of the field weeds of the cow twig. Taking into account the safety factors, plant control efficacy and fresh weight control efficacy of Rhizoma Coptidis, the use of the compound pesticide provided in this application and the corresponding application dosage during the stem and leaf stage is the optimal choice for integrated weed control in fields with heavy Rhizoma Coptidis.

[0186] Comparing the data of comparative example 14 and embodiment 1, it can be seen that when other prevention and control measures are the same, relative to comparative example 14, 10 days after the drug, 20 days after the drug and 60 days after the drug, the compound pesticide provided in embodiment 1 has the highest control effect on the weeds in the field of schizonepeta, which are 59.76%, 75.71% and 82.45% respectively. After 60 days after the drug, the compound pesticide provided in embodiment 1 has a control effect of 92.32% on the fresh weight of weeds in the field of schizonepeta, while the compound pesticide provided in comparative example 14 has a control effect of only 84.73% on the fresh weight of weeds in the field of schizonepeta after 60 days. At the same time, the data of embodiment 6 compared with embodiment 1 can also prove that adding the prevention and control measures screened by this application has a positive effect on the weed control in the schizonepeta breeding field.

[0187] Comparing Examples 1 to 6, the safety of different prevention and control measures on Psoralea corylifolia and the control effects of weeds in the field are investigated as shown in Table 5.

[0188] Table 5 Effects of different control measures on the safety of Rhizoma Cnidium and control of weeds in the field

[0189]

[0190] Note: Different lowercase letters in the table indicate significant differences, i.e. P<0.05.

[0191] As can be seen from Table 5, the effects of different prevention and control measures on weed control in the field of Corydalis truncatula are very different. In Example 1, the stem and leaf compound pesticide provided by the present invention and the preferred dosage are used only in the three-leaf stage to control the weeds in the field of Corydalis truncatula. After 30 days of control, the plant control effect and fresh weight control effect are 77.6% and 89.51%, respectively. In Example 2, the stem and leaf compound pesticide provided by the present invention is used only in the three-leaf stage, and the dosage of the compound pesticide is not the preferred dosage. After 30 days of control, the plant control effect and fresh weight control effect are 71.64% and 85.62%, respectively. It can be seen that by using the compound pesticide and dosage range provided by the present invention, after 30 days of control, the plant control effect and fresh weight control effect of Corydalis truncatula field weeds can reach 70% and 80% or more, respectively. By using the preferred dosage provided by the present invention, after 30 days of control, the plant control effect and fresh weight control effect can reach 77.6% and 89.51%, respectively. On the basis of Example 1, soil sealing weed control measures were added. After 30 days, the plant control efficiency and fresh weight control efficiency were 79.65% and 90.53%, respectively (Example 3). The plant control efficiency and fresh weight control efficiency after 30 days of medication were improved compared with those in Example 1. This shows that during the planting period of Corydalis chinensis, adding soil sealing measures before sowing can effectively improve the control effect of weeds in Corydalis chinensis fields.

[0192] Examples 4 to 6 all add seed treatment control measures on the basis of Example 3, wherein the seed treatment process of Example 4 includes mechanical rolling treatment, and the seed treatment processes of Examples 5 and 6 both include mechanical rolling treatment and lentinan soaking treatment. The added schizonepeta seed treatment process in Examples 4 to 6 can not only improve the seed germination rate, the seed germination rate can even reach more than 95%, but also effectively improve the control effect of schizonepeta field weeds. This is because the germination rate of schizonepeta is high, which limits the growth space of weeds, thereby improving the weed control effect. Compared with Example 4, Example 5 adds a lentinan soaking step. The plant control efficacy and fresh weight control efficacy of Example 5 after 30 days of medication are still improved compared with those of Example 4 after 30 days of medication. This is because the lentinan solution makes the seedlings after germination have good drug resistance and disease resistance, ensuring the planting effect of Coix lacryma-jobi; Example 6 further adds a supplementary application step, and supplements pesticides in different ratios according to the field conditions of Coix lacryma-jobi, so that the plant control efficacy and fresh weight control efficacy of Example 6 after 30 days of medication are further improved compared with those of Example 5 after 30 days of medication, among which the fresh weight control efficacy reaches 91.14%, which can basically effectively prevent and control weeds in the Coix lacryma-jobi breeding field.

[0193] The number of equipment and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the method for controlling weeds in the field of schizonepeta proliferating will be apparent to those skilled in the art.

[0194] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the specific embodiments shown and described herein.

Claims

1. A method for controlling weeds in a field of schisandra chinensis, characterized in that: The method comprises the step of spraying the compound pesticide on the stems and leaves for the first time when the cowpea is in the three-leaf stage. The compound pesticide and the dosage are 150-210 mL / mu of 5% imazethapyr, 50-70 mL / mu of 158 g / L high-efficiency flupyramide and 50-70 mL / mu of 440 g / L fluazifop-butyl.

2. The method for controlling weeds in the field of schizonepeta tenuifolia as claimed in claim 1, characterized in that: The compound pesticide and dosage are 180 mL / mu of 5% imazethapyr, 60 mL / mu of 158 g / L high-efficiency fluazifop-p-ethyl and 60 mL / mu of 440 g / L fluazifop-p-ethyl.

3. The method for controlling weeds in the field of schizonepeta tenuifolia as claimed in claim 2, characterized in that: The method also includes the step of sealing the soil before sowing, specifically: watering the soil before sowing the cowpea seeds, applying 100-140 mL / mu of 5% imidacloprid after watering, and then sowing after the surface is suitable for sowing.

4. The method for controlling weeds in the field of schizonepeta tenuifolia as claimed in claim 3, characterized in that: The method also includes the step of processing the Rhizoma Corydalis seeds, specifically, evenly rolling the Rhizoma Corydalis seeds 2 to 4 times.

5. The method for controlling weeds in the field of schizonepeta tenuifolia as claimed in claim 4, characterized in that: The method also includes the step of soaking the crushed Rhizoma Cistanches seeds in a 0.01-0.2 mg / mL Lentinan solution for 10-30 minutes.

6. The method for controlling weeds in the field of schizonepeta tenuifolia as claimed in claim 5, characterized in that: The method also includes the steps of watering 20 to 25 days after the first spraying of the compound pesticide, and supplementing with one or more of 5% imazethapyr, 158 g / L high-efficiency haloxyfop-methyl and 440 g / L fluazifop-methyl 15 to 20 days after the first spraying of the compound pesticide, wherein: When the average plant height of Fengdi Niuzhizi is less than 2.5cm: If the weed control efficiency is less than 85%, apply 5% imazethapyr 100-140mL / mu, 158g / L high-efficiency halpyr-methyl 10-30mL / mu and 440g / L fluazifop-methyl 10-30mL / mu; If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 100-140mL / mu and 158g / L high-efficiency halpyr-methyl 10-30mL / mu. If the weed control efficiency is ≥88%, apply 5% imazethapyr 100-140mL / mu; When 2.5cm≤average plant height of Fengdi Niuzhizi<3.0cm: If the weed control efficiency is less than 85%, apply 5% imazethapyr 50-70 mL / mu, 158g / L high-efficiency halpyr-methyl 10-30 mL / mu and 440g / L fluazifop-bentazone 10-30 mL / mu. If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 50-70 mL / mu and 158g / L high-efficiency fluorine 10-30 mL / mu; If the weed control efficiency is ≥88%, apply 5% imazethapyr 50-70 mL / mu; When the average plant height of Fengdi Niuzhizi is ≥3.0cm: If the weed control efficiency is less than 85%, apply 5% imazethapyr 20-40 mL / mu, 158g / L high-efficiency halpyr-methyl 10-30 mL / mu and 440g / L fluazifop-methyl 10-30 mL / mu; If the weed control efficiency is 85% or less and less than 88%, apply 5% imazethapyr 20-40mL / mu and 158g / L high-efficiency halpyr-methyl 10-30mL / mu. If the weed control efficiency is ≥88%, apply 5% imidacloprid 20-40 mL / mu.

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