In the process of growing crops, insecticides are indispensable. In order to use pesticides by farmers, the small series of pesticide nets summarizes several fungicide products with good effects in recent years. I hope to help you. .

1, methyl parathion: also known as methyl one hundred and six. Brown oily liquid, hardly soluble in water, soluble in ethanol and acetone. It is stable in neutral and acidic media and decomposes rapidly in the presence of alkaline substances. It has the effects of contact and stomach toxicity, and has a certain steaming effect.

The residual period of methyl parathion on the green leaves is 12--36 hours, and it can remain for several days on the inanimate body. The main control objects are jujube armyworm, jujube tape and so on.

2, malathion: pure compound is a colorless liquid, stable in neutral medium, copper, aluminum decomposition fast, soluble in organic soluble dose, slightly soluble in water.

The drug is mainly used for contact and stomach toxicity, and can be oxidized to a higher virulence oxidized malathion in the pest, thereby exerting stronger insecticidal properties. The main control objects are the pests of the Lepidoptera, the leaf-hoppers of the leaf-feeding insects. Use a concentration of 50% malathion EC 1000-1500 times solution.

3, Diguo: is a highly efficient low-toxic organophosphorus pesticide . It is a commonly used systemic insecticide. When the medicine is absorbed by the plant, it is transported to roots, stems, leaves, flowers, fruits and other organs as the water flows through the tree, but does not affect the normal physiological functions of the plants. When the pests feed on the plant organs, they are taken. The liquid kills poisoning and dies.

Dimethoate not only has a strong systemic insecticidal effect, but also has good contact and stomach toxicity. It is a broad-spectrum high-efficiency and low-toxic insecticide commonly used by fruit farmers. However, in jujube trees, dimethoate is very sensitive to jujube leaves, which is easy to cause phytotoxicity. Therefore, jujube trees generally do not use dimethoate, but use omethoate.

The control target of omethoate is leaf roller and mites, and the commonly used concentration is 40% omethoate 20000 times. To be resistant to pests, it should be used interchangeably with other pesticides .

4, phoxim: light yellow oily liquid, stable in medium and acidic medium, easy to decompose in the presence of alkali. Degraded faster in the sun. Degradation is slower in dark conditions. The residual period is 2 - 3 days.

The phoxim has a strong contact and stomach toxicity, and has no systemic action. It has contact and fumigation effects on bees. It is a high-efficiency, low-toxic and low-residue pesticide. It has the best killing effect on jujube armyworms, and also has good effect on lepidoptera, special effects on turtles, fruit flies and warehouse pests. The commonly used concentration is 50% phoxim 1000--1500 times.

5, carbaryl: also known as carbaryl. The drug is non-irritating, odorless, does not pollute the environment, has stable properties and long residual effects.

With the contact, stomach and weak systemic effects, carbaryl can control more than 150 kinds of pests and can be mixed with a variety of pesticides. Can not be mixed with alkaline drugs. The usual concentration is 50% carbaryl 400 times solution. The control object is a scale insect.

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