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Anonymous users2024-02-13Clean the field to remove the dead branches and leaves near the vegetable field, and burn them intensively, which can eliminate some overwintering adults.
Eradicating the bridge hosts around the vegetable plot and cutting off the feeding conditions for continued reproduction can reduce the transformation of adult cruciferous vegetables into cruciferous vegetables.
When the insect population density is large, it can be controlled with pesticides, and the commonly used pesticides are dimethoate emulsifiable concentrate; Trichlorfon raw powder multiplication; dichlorvos emulsifiable concentrate double; deltamethrin double; Good control effect can be obtained.
In addition: in April and May, the prevention and control of the spotted whisker bug that harms the shoots, buds and leaves can be sprayed with 40 dimethoate 1500 2000 times. In the early stage of fruit ripening (June to July), spotted bugs inhabit the damage between the fruit ears, when the density reaches the control index of 2 spikes, the high-efficiency, low-toxicity and low-residual pesticides should be selected for prevention and control, and the liquid is generally evenly sprayed on the fruit ears.
If 80 dichlorvos 2000 3000 times liquid is used for prevention and control, it should be paid attention to more than 3 days before harvesting; For example, when using 800-1200 times of 90 crystal trichlorfon to control it, it should be carried out more than 7 days before harvesting; For example, when using 3000-5000 times of 20 hydroinulin emulsifiable concentrate or 3000-4000 times of 20 hydroinulin emulsifiable concentrate or 20 times of scavenging, it is necessary to grasp 15-20 days before harvesting, so as to ensure the safety of fruit and food harvest. The prevention and control effect is generally more than 85.
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Anonymous users2024-02-12Insecticides, pesticides, gunners can do it.
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Anonymous users2024-02-11Answer 1: Close the doors and windows and carefully inspect the cracks in the doors and windows in the house to see if there are any gaps. 2. Drug spraying can be sprayed with insect repellent on the market, and the gas left after spraying can effectively expel the smelly sister. 3. Cut off the light, the stinky sister is often attracted because of the light and temperature, and the curtains can be closed when the lights are turned on at night, and cutting off the light can effectively attract the stinky sister.
Question: Insect repellent didn't work.
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Anonymous users2024-02-10In the selection of medicinal varieties for the prevention and control of T. chinensis, cotton farmers have been accustomed to using conventional organophosphorus and pyrethroid pesticides such as high chlorine to control pests in cotton fields for many years, which has made T. chinensis resistant to pesticides, and the control effect of organophosphorus and its compounds has decreased significantly.
Biological control: The natural enemies of orange bugs are abundant, and there are known to be yellow ants, parasitic wasps, praying mantises, spiders and so on, which should be protected and utilized. Natural predators: There are many kinds of yellow ants, flat-bellied wasps, praying mantises, spiders, etc.
Pesticide control: If there are too many insect populations and it is impossible to solve them by manual control, you can spray with 1000 times dilution of 80% trichlorfon [span] emulsion or 800 1000 times dilution of 90% trichlorfon crystals. If some pine alkali mixture is added to the trichlorfon [span] solution, the control effect can be improved, and it can be mastered.
The first and second instar nymphs are better controlled in the [span] stage.
Here are some things you can try to get rid of bed bugs:
1. Environmental cleaning: keep the home clean, often clean the environment at home, and remove debris, especially from corners to small places, which are places where bed bugs often come and go. In places where bed bugs are more likely to appear, you can use lime to find out where bed bugs crawl. >>>More
In the selection of medicinal varieties for the prevention and control of T. chinensis, cotton farmers have been accustomed to using conventional organophosphorus and pyrethroid pesticides such as high chlorine to control pests in cotton fields for many years, which has made T. chinensis resistant to pesticides, and the control effect of organophosphorus and its compounds has decreased significantly. >>>More
1. There are two main ways to eliminate ticks on the body of animals, one is to catch them directly, and the other is to use chemical drugs to kill ticks. And use chemicals to destroy ticks. >>>More
5 practices for reference: 1. Try to keep the house dry, especially the bathroom and kitchen should be clean and hygienic, and no garbage should be stored. 2. When you see cockroaches, spray them with insecticidal aerosols or trample them to death. >>>More
Red ants can be exterminated using some pesticides, such as cypermethrin, trichlorfon, etc. However, when using these drugs, it is necessary to pay attention to safety and avoid harm to the human body and the environment. It is recommended to read the instructions carefully before use and follow the instructions for proper use.