Pesticide composition containing chlorpyrifos and application of pesticide composition

Abstract

The invention discloses a pesticide composition containing chlorpyrifos. The pesticide composition consists of the following components in parts by weight: 40-120 parts of chlorpyrifos, 5-15 parts of pymetrozine and 15-30 parts of buprofezin. The invention also provides application of the pesticide composition containing chlorpyrifos in the prevention and treatment of brown planthoppers. The method has the advantages that the harm can be controlled by using the pesticide composition one time, and quick and persistent effects are excellent, so that the toil and cost caused by a poor control effect after the use of drugs multiple times are avoided, the adverse effects on the environment of pesticide residue in rice is reduced, and the labor intensity of the use of a large amount of water is alleviated. The maximum control effect of the pesticide composition on the brown planthoppers reaches 98.8%.

Description

Technical field [0001] The invention belongs to the field of chemical pest control, and particularly relates to a pesticide composition containing chlorpyrifos and its application. Background technique [0002] The brown planthopper is one of the most important pests that damage rice. With the widespread use of buprofezin in the past two decades, it has developed high resistance to pesticides. It has been poorly imitated when used alone. Pymetrozine, chlorpyrifos or pymetrozine are used to control planthoppers. A compound of aphidone, buprofezin, chlorpyrifos, etc. With the increase in the number of uses in recent years, its control effect has gradually declined. Especially after heading, the growth of the rice population reaches its peak and grows densely. The generation of brown planthoppers overlaps seriously, and the planthoppers are concentrated in the lower part and spread to the upper part from the early stage. Since 2005, it is difficult to achieve the ideal control eff...

AI Technical Summary

Problems solved by technology

Since 2005, it is difficult to achieve the ideal control effect against brown planthoppers in the later stages of rice, especially in fields with high insect populations. Farmers frequently use pesticides in a short period of time, even four times in five days, but they cannot control brown planthoppers below the control index, adults and nymphs. After a few days of control, another large number of eggs hatched into nymphs

Because most of the prescriptions recommended by the technical department are pymetrozine or chlorpyrifos, the single dose or binary mixture of pymetrozine is difficult to get the effect at one time

What's more, in order to control brown planthopper damage, some farmers use highly toxic and highly toxic pesticides (such as 1605, phorate, endosulfan) used on cotton and other crops for planthopper control, causing adverse effects on agricultural products and the ecological environment

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