Control method of super-old barnyard grass in rice transplanting field

A technology for barnyardgrass and rice is applied in the field of control of super-aged barnyardgrass in rice transplanting fields, which can solve the problems of blocking the conduction of medicaments, excessive leaf age of barnyardgrass, and large size of old barnyardgrass, so as to improve the control effect and safety. The effect of anti-aging, delaying the appropriate period of medication, and strong systemic conductivity

Inactive Publication Date: 2019-11-05
淮安市植保植检站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Missing the best period of medication will not only increase the cost of medication, but also make it difficult to control barnyardgrass when the leaves are too old, and the effect is not ideal. Without relatively mature formulas and control methods, we have to give up control
[0005] The main reasons why it is difficult to control super-old barnyard grass are: firstly, the old barnyard grass grows vigorously, has luxuriant branches and leaves, and has a very fast metabolism. A small amount of medicine has no lethal effect on the barnyard grass; The time will block the conduction of the pesticide, and the amount of pesticide that finally reaches the growth point is very small; in addition, the old barnyard grass is very large, and it is difficult to spray the pesticide through

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment one: the test is set at 150 mu of transplanted rice seedling fields of Fan Yonghua, a big planter in Hanqiao Town, Huaiyin District. No sealing treatment was carried out before and after transplanting. 30 days after transplanting, there were more than 10 tillers of barnyardgrass in the field, and some of them had already headed; Wait for the mixed students to be serious. Use on June 26th, drain the water before using the medicine, use 15 ml of 19% flunone sulfenzone suspending agent + 10% bispyribac ether suspending agent active ingredient 4 grams per mu and mix 80 kg of water to evenly spray the barnyard grass. After rehydration within 48 hours, maintain a 3-5 cm water layer and keep water for 5-7 days. According to the survey on July 6, the overall control effect reached more than 90%, and the cure rate was as high as 85% to 90%. The control effect on super-old barnyardgrass and resistant barnyard grass was remarkable.

Embodiment 2

[0024] Embodiment two: Fan Qigui, a large planter in Hanqiao Town, Huaiyin District, transplanted 100 mu of seedling fields. It previously used the traditional control technology of secondary blocking. For the first time, when the muddy water was turbid after raking (leveling) the field, 100 grams of 50% pretilachlor was sprayed or casted per mu. During the application, the field had 3~ 5 cm water layer, transplant after the soil is settled after spraying; for the second time, after the seedlings are transplanted to live trees (that is, 5 to 7 days after transplanting), use 53% benzothiophene-benzyl WP per mu 50-60 grams, or 80 grams of 50% benzyl-butyl-isopropyl + 10-15 grams of 10% pyrazosulfuron-methyl, mixed with fine soil or fertilizer and spread evenly. However, the control effect was not good, and 30 days after transplanting, large areas of barnyardgrass and barnyardgrass were grown in large areas. Some barnyardgrass had more than 7 leaves, some had multiple tillers, an...

Embodiment 3

[0025] Embodiment Three: The test was set in a 100-mu machine-transplanted field in Lingqiang, a large planting household in Lingqiao Town, Huaiyin District. No sealing treatment was carried out before and after transplanting. 30 days after transplanting, some barnyardgrass in the field had more than 8 leaves, and some had multiple tillers; Combination of bermudagrass and other species is serious. Apply on June 20th, drain the water before using the drug, use 13 ml of 19% flunone sulfentrane suspending agent + 40% bispyribac ether suspending agent active ingredient 3 g mixed with 70 kg of water to evenly spray the barnyard grass, and use After rehydration within 48 hours, maintain a 3-5 cm water layer and keep water for 5-7 days. According to the survey on July 6, the overall control effect reached more than 92%, and the eradication rate was as high as 85% to 90%.

[0026] Comparative example (only blocking but not killing): secondary blocking technology. For the first time...

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PUM

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Abstract

The invention discloses a control method of super-old barnyard grass in a rice transplanting field. After rice is transplanted, in the stage from 7 leaf stage comprising 6-leave 1-core stage or aboveto heading stage, 12-15ml of a 19% triafamone suspending agent and 3-4g of bispyribac-sodium active ingredients are added with 60-80kg of water and are uniformly sprayed to the barnyard grass per mu.According to the invention, the barnyard grass control suitable time in the rice transplanting field is greatly shifted backward, aiming at the control of the super-old barnyard grass, after the 5-leaf stage of the rice, triafamone and bispyribac-sodium are ensured to be used in combination, two high-activity acetolactate synthase (ALS) inhibitors are used in combination, internal absorption conductivity, penetrability and lethal intensity shown by the combination use of the triafamone and the bispyribac-sodium to the super-old barnyard grass in the later stage are incomparable to that of other stem and leaf treatment agents, the weeding activity is abnormally exerted, the problem of controlling and removing of the barnyard grass in the stage from the 7 leaf stage or above to the heading stage is solved, and the control effect on resistant barnyard grass (including green-stem barnyard grass and red-stem barnyard grass) and paspalum distichum(including knotgrass and Entada phaseoloides)is excellent.

Description

technical field [0001] The invention relates to the technical field of rice field cultivation management, more specifically, it relates to a method for preventing and treating super-old barnyardgrass in a rice transplanting field. Background technique [0002] Barnyardgrass belongs to Gramineae, and barnyardgrass is an annual herb, mostly grown in rice fields, swamps and ditches. Barnyardgrass has a tall plant type, strong vitality and fecundity, and wide adaptability. It can grow vigorously no matter the soil is fertile or thin, and the climate is cold or warm. It competes with rice for fertilizer, water, and sunlight. It is the largest malignant weed in rice fields everywhere. Rice yield and quality pose a huge threat. [0003] In agricultural production (this is for the purpose of explaining the problem, it is my own classification standard) the preliminary classification of barnyardgrass leaf age: ⑴ Young barnyard grass: refers to 1 to 4 leaves (including 3 leaves and 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/24A01N43/66A01N43/54A01G13/00A01P13/00
CPCA01G13/00A01N25/24A01N43/54A01N43/66
Inventor 孙永军马晓伟施保国倪运东
Owner 淮安市植保植检站
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