Method for trapping and killing lygus lineolatus in winter jujube greenhouse

Abstract

The present application belongs to the technical field of jujube tree disease and pest control, and particularly relates to a method for trapping and killing winter jujube greenhouse blind bugs, comprising the following steps: 1, planting corn in the row of jujube trees, so that the corn flowering period meets the jujube tree flowering period; 2, setting a trapping and killing tool on the corn corolla; 3, in the early corn flowering period, spraying a propylene glycol solution and an anise oil ethanol mixed solution on the corn corolla, and then opening the trapping and killing tool to trap and kill blind bugs. The method effectively reduces the number of blind bugs in the winter jujube greenhouse, and the number of blind bugs per tree in the high incidence period in early July is 2-6, which basically does not form harm and is safe and non-polluting. The fruit setting number of a single jujube tree in the mature period of winter jujube is 2.5 times that of an ordinary greenhouse, greatly improving the yield of winter jujube.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of jujube tree pest control, and particularly relates to a method for trapping and killing winter jujube greenhouse lygus. BACKGROUND

[0002] Lygus belongs to the family Miridae and order Hemiptera, and is widely distributed in China, causing serious damage. After being damaged by Lygus, jujube trees are difficult to germinate, and the first sign is the appearance of yellowish spots on the leaf buds. As the leaves expand, the spots gradually turn into irregular small holes, making the damaged leaf surface full of irregular small holes. Lygus stings the nutrients of jujube tree sprouts and leaves its toxins on the jujube trees, which can cause the jujube trees to not bloom, the flower buds to wither due to stopped development, and even no flowers, thereby reducing the fruit setting rate of jujube trees and the yield of fruits, and causing serious economic losses to fruit farmers. In winter jujube orchards, adult Lygus often climbs to leaves and buds at night or early in the morning to feed and damage, and farmers usually spray pesticides during the day, which is difficult to exert the contact-killing performance of the pesticides and achieve the control effect. Lygus climbs quickly when it is startled, and its individual is relatively small and has a color similar to that of leaves, so it is not easy to be found, and the best spraying time is easily missed, leading to the flooding of Lygus. Meanwhile, Lygus has a certain concealment due to its relatively small body, and both adults and nymphs can cause piercing and sucking damage, and the damage symptoms appear with a lag, which causes many farmers to fail to take timely control. In addition, the use of pesticides to control Lygus in winter jujube trees also has the following safety problems: 1. Pesticide residues: after using pesticides, pesticide residues may be left on the winter jujube trees, which may pose a potential threat to human health. 2. Environmental pollution: during the use of pesticides, the surrounding environment may be polluted, affecting the ecological balance. 3. Problem of pesticide resistance: long-term use of pesticides to control Lygus may lead to the development of pesticide resistance in Lygus, reducing the effect of pesticides. 4. Misuse or excessive use of pesticides: may cause damage to winter jujube trees and surrounding plants, and even cause pesticide damage. 5. Use of unsafe pesticides: some pesticides may pose a threat to human health, and if not paid attention to during use, safety problems may occur. Therefore, it is necessary to provide a method for effectively controlling Lygus without pollution. SUMMARY

[0003] In view of the low safety, time-consuming and labor-intensive, and poor effect in the prior art, the present application provides a method for trapping and killing Lygus in winter jujube greenhouses, which can effectively control Lygus without pollution.

[0004] A method for trapping and killing Lygus in winter jujube greenhouses, the method comprising the following steps:

[0005] Step 1: planting corn in the rows of jujube trees so that the corn flowering period meets the jujube tree flowering period;

[0006] Step 2: sleeving the corn pistil with a trapping tool;

[0007] Step 3: Spraying propylene glycol solution and anise oil ethanol mixture on corn corolla at the beginning of corn flowering stage; opening the killing tool to kill the Lygus bugs.

[0008] Preferably, the corn flowering stage in step 1 is controlled in the period from June 20 to July 10. This period is the most serious damage period of jujube trees by Lygus bugs, which can greatly improve the killing effect.

[0009] Preferably, the planting density of corn in step 1 is one of 3-6 meters of plant spacing or 1-2 jujube trees per 1 corn. The density can not only effectively play the role of corn killing Lygus bugs, but also facilitate ventilation, light transmission and field operation.

[0010] Preferably, the planting row spacing of corn in step 1 is consistent with the row spacing of jujube trees. The row spacing can facilitate field management and field operation.

[0011] Preferably, the corn corolla in step 3 is corn stamen. The corn stamen contains other components such as flavonoids, phytosterols, corn alcohol, fatty acids, aldehydes, etc., which can attract Lygus bugs.

[0012] Preferably, in step 3, propylene glycol solution and anise oil ethanol mixture are sprayed on corn stamens every 2-3 days at the beginning of corn flowering stage. The spraying time is in the evening, preferably from 6:00 to 6:40. Generally, the beginning of corn flowering stage lasts for 7-10 days, and propylene glycol solution and anise oil ethanol mixture can be sprayed 4-6 times respectively. The main aromatic substance of anise oil ethanol mixture is anethole, with a content of about 50%-60%. In addition, it also contains components such as lavandulat, cuminone, etc.

[0013] Preferably, the spraying amount of propylene glycol solution is 150-280 g·(mu·time) -1 .

[0014] Preferably, the spraying amount of anise oil ethanol mixture is 180-220 mL·(mu·time) -1 .

[0015] Preferably, step 1 further comprises soil treatment before planting corn: 20-30 g of potassium dihydrogen phosphate and 3-10 g of borax are applied per corn. The vegetative growth of corn is controlled, and it is promoted to bloom more and prolong the flowering period.

[0016] Preferably, in step 2, the killing tool is opened after spraying for 30-50 minutes. The Lygus bugs trapped in the killing tool are killed, and the control effect is good.

[0017] Preferably, the trapping tool in step 2 is composed of a metal mesh, a fluorescent lamp and an extension rod, the top of the metal mesh is provided with the fluorescent lamp, one side of the bottom of the metal mesh is provided with the extension rod, the top of the extension rod is provided with a power supply and a high-voltage electric shock device, and the bottom and the top of the metal mesh are respectively provided with a first opening and a second opening.

[0018] Preferably, the metal mesh is arc-shaped. This structure can facilitate the fitting on the pistil and enhance the trapping effect.

[0019] Preferably, the wavelength of the fluorescent lamp is 400 nm. This wavelength can effectively attract the lygaeus apicalis.

[0020] The method provided by the present application has the advantages that:

[0021] (1) The method for trapping the lygaeus apicalis in the winter jujube greenhouse provided by the present application meets the corn flowering period and the jujube flowering period through intercropping corn, utilizes the stamens to trap the lygaeus apicalis, and cooperates with the trapping tool to trap the lygaeus apicalis, thereby avoiding chemical control such as spraying and achieving pollution-free and effective control of the lygaeus apicalis. In addition, the method can further enhance the trapping effect on the lygaeus apicalis by spraying a propylene glycol solution and an anise oil ethanol mixed solution in the early corn flowering period to interact with effective substances in the corn stamens. In the early July, the number of lygaeus apicalis per jujube tree is only 2-6, and basically no harm is caused.

[0022] (2) Through the method provided by the present application, the number of fruits per jujube tree in the mature period of winter jujube is 2.5 times that of the blank control by reducing the harm of the lygaeus apicalis, thereby greatly improving the yield of winter jujube. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure diagram of the trapping tool provided by the present application is shown.

[0024] In the figure, 1 is a metal mesh, 2 is a fluorescent lamp, 3 is a high-voltage electric shock device, 4 is a power supply, 5 is an extension rod, 6 is a first opening, and 7 is a second opening. DETAILED DESCRIPTION

[0025] The present application discloses a method for trapping the lygaeus apicalis in the winter jujube greenhouse, and those skilled in the art can refer to the content of the present application, appropriately improve the process parameters and perform field operation. It should be particularly pointed out that all similar replacements and changes are obvious to those skilled in the art, and they are regarded as included in the present application. The method and application of the present application have been described by selecting better embodiments through relevant tests, and relevant personnel can obviously modify or appropriately change and combine the method and application described in the present application without departing from the content and scope of the present application, to realize and apply the present application technology.

[0026] The propylene glycol solution and the anise oil ethanol mixed solution provided by the present application are respectively obtained by the following methods:

[0027] The preparation method is to dissolve 200-300 g of propylene glycol in 1000 g of water.

[0028] The preparation method of the anise oil and ethanol mixture is to dissolve 1 volume of anise oil in 3 volumes of 90% ethanol.

[0029] The test garden is located in Xiawa Town, Zhanhua District, Binzhou City, Shandong Province. The winter jujube trees were planted in 2012, with a plant spacing of 3 meters and a row spacing of 4 meters. The greenhouse was built in 2020. In 2022, seven test plots were managed according to the blank control group, Examples 1-3, and Comparative Examples 1-3, with each test plot being a greenhouse. The size of the greenhouse is 24 meters wide from east to west and 30 meters long from north to south. All treatments do not spray pesticides. Water, fertilizer, and other agricultural operations such as pesticides are managed according to the standard unified management of solstice and jujube tree growth needs.

[0030] Blank control: No corn is planted in the winter jujube greenhouse, and no propylene glycol solution or anise oil and ethanol mixture is sprayed, which is a conventional winter jujube greenhouse.

[0031] Example 1

[0032] A method for trapping and killing stink bugs in a winter jujube greenhouse, the method comprising the following steps:

[0033] Step 1: On April 29, corn Zhengdan 958 is planted in the row between jujube trees, with a plant spacing of 3 meters and a row spacing consistent with the jujube trees. In the corn planting area, 5 g of potassium dihydrogen phosphate and 7 g of borax are applied. The corn flowering period meets the jujube flowering period from June 20 to July 2.

[0034] Step 2: Slowly cover the first opening 6 on the corn stamen, stand the telescopic rod 5 on the ground to fix, and surround the corn stamen with the metal mesh surface 1. The metal mesh surface 1 is arc-shaped and can effectively cover the stamen. The corn stamen is attracted to the stink bugs under the action of the propylene glycol solution and the anise oil and ethanol mixture;

[0035] Step 3: In the early corn flowering period, the second opening 7 is used to spray propylene glycol solution on the corn stamen every 2-3 days, with a dosage of 280 g·(mu·time) -1 ; The anise oil and ethanol mixture is sprayed, with a dosage of 220 mL·(mu·time) -1 . The spraying time is at six o'clock in the evening, and each treatment is sprayed 6 times in the early corn flowering period; After each spraying for 30 minutes, the killing tool is opened to kill the stink bugs. Turn on the power 4, and use the 400 nm wavelength fluorescent lamp 2 to trap the stink bugs according to their phototaxis, while the high-voltage electric shock device 3 and the metal mesh surface 1 emit current to kill the stink bugs.

[0036] Example 2

[0037] The difference between Example 1 and Example 2 is that in Step 2, the dosage of propylene glycol solution is 240 g·(mu·time)-1 ; fennel oil and ethanol mixture, amounting to 180 mL·(mu·time) -1 .

[0038] Example 3

[0039] The difference from Example 1 is that the propylene glycol solution in step 2 is used in an amount of 200 g·(mu·time) -1 ; fennel oil and ethanol mixture, amounting to 140 mL·(mu·time) -1 .

[0040] Comparative Example 1

[0041] A method for trapping and killing stink bugs in a winter jujube greenhouse, the method comprising the following steps:

[0042] Step 1: On April 29, corn Zhengdan 958 was planted in the row between jujube trees, with a plant spacing of 3 meters and a row spacing consistent with the jujube trees. In the corn planting area, 5 g of potassium dihydrogen phosphate and 7 g of borax were applied. The corn flowering period coincided with the jujube flowering period from June 20 to July 2.

[0043] Step 2: A trapping tool was set on the corn stamen, the opening 6 was slowly sleeved on the corn stamen, the telescopic rod 5 was fixed standing on the ground, the metal mesh surface 1 surrounded the corn stamen, the metal mesh surface 1 was in the shape of a lantern and could effectively sleeve the stamen, the power supply 4 was turned on, and the stink bugs were trapped by the 400 nm wavelength fluorescent lamp 2 according to the phototaxis of the stink bugs, while the high-voltage electric shock device 3 and the metal mesh surface 1 emitted electric current to trap and kill the stink bugs.

[0044] Comparative Example 2

[0045] The difference from Example 1 is that only propylene glycol solution is sprayed in step 2, and the amount is 240 g·(mu·time) -1 .

[0046] Comparative Example 3

[0047] The difference from Example 1 is that only fennel oil and ethanol mixture is sprayed in step 2, and the amount is 180 mL·(mu·time) -1 .

[0048] Test Example

[0049] Each winter jujube greenhouse was evenly distributed in an S shape to find 5 trees as the statistical object. On July 4, the number of stink bugs on each tree was counted as the number of stink bugs per winter jujube tree. On October 3, the number of fruits on each tree was counted as the number of fruits per winter jujube tree.

[0050] Table 1 shows the control effect of different treatment methods and the number of winter jujube fruits in each test field

[0051] Test field Number of stink bugs per jujube tree Number of fruits per jujube tree Blank control 69±11 355±37 Example 1 8±3 758±22 Example 2 4±2 892±18 Example 3 18±2 716±34 Comparative Example 1 45±13 483±51 Comparative Example 2 26±5 581±18 Comparative Example 3 23±8 557±36

[0052] The method provided by the application effectively reduces the number of piezodorus in the winter jujube greenhouse, and the number of piezodorus per tree in the high incidence period in early July is only 2-6, which basically does not constitute a hazard to jujube trees. The method does not require the use of drugs and is safe and non-polluting. The fruit setting number of single jujube tree in the mature period is 2.5 times that of the blank control, greatly improving the yield of jujube trees and increasing the income of fruit farmers.

Claims

1. A method for trapping and killing mirid bugs in jujube greenhouses, characterized in that, The method includes the following steps: Step 1: Plant corn between the rows of jujube trees so that the flowering period of corn coincides with that of jujube trees; Step 2: Set the trapping tool on the corn flower stamen; Step 3: At the beginning of the corn flowering period, spray the corn stamens with a mixture of propylene glycol solution and fennel oil ethanol every 2-3 days, then use trapping tools to attract and kill mirid bugs; the amount of propylene glycol solution sprayed is 150-280g / (acre·time). -1 The application rate of the fennel oil-ethanol mixture is 180–220 mL per mu (per application). -1 .

2. The method according to claim 1, characterized in that, In step 1, the corn flowering period is controlled between June 20 and July 10.

3. The method according to claim 1, characterized in that, In step 1, the planting density of corn can be either 3-6 meters apart or 1-2 jujube trees between each corn plant.

4. The method according to claim 1, characterized in that, In step 1, the row spacing for planting corn is the same as that for planting jujube trees.

5. The method according to claim 1, characterized in that, Step 1 also includes applying 20-30g of potassium dihydrogen phosphate and 3-10g of borax before planting corn.

6. The method according to claim 1, characterized in that, The trapping tool described in step 2 consists of a metal mesh (1), a fluorescent lamp (2) and a telescopic rod (5). The top of the metal mesh (1) is equipped with a fluorescent lamp (2), and the bottom side of the metal mesh (1) is equipped with a telescopic rod (5). The top of the telescopic rod (5) is equipped with a power supply (4) and a high-voltage electric shock device (3). The bottom and top of the metal mesh (1) are respectively equipped with a first opening (6) and a second opening (7).

7. The method according to claim 6, characterized in that, The structure of the metal mesh (1) is arc-shaped.

8. The method according to claim 6, characterized in that, The wavelength of the fluorescent lamp (2) is 400 nm.

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