To prevent and control peanut diseases and insect pests, it is generally necessary to apply pesticides 2 to 3 times during the growth cycle of peanuts. Recently, it was learned from the Plant Protection Institute of Anhui Academy of Agricultural Sciences that the phoxim microcapsule suspension developed by the institute has overcome the pesticide control release technology. When peanuts are planted once, the damage of underground pests such as grubs can be controlled during the whole growth period of peanuts, and the yield can be increased by 20% to 40% compared with the application of conventional pesticides.
It is understood that the secret of the controlled release of the pesticide lies in the large number of "plastic pellets" with a diameter of 1 to 50 microns suspended in the pesticide liquid. Pesticide phoxim is poured into these invisible pellets with advanced technology. After being mixed with water and mixed into the soil, it is basically not released below 8 degrees Celsius, and the release amount below 20 degrees Celsius is very small, and it is released above 20 degrees Celsius. The speed began to accelerate, and the release was very fast above 30 degrees Celsius. After peanuts are sown in early and mid-April each year, the soil temperature is low and there are no pests and diseases. At this time, the amount of pesticides released is very small. By mid-to-late July, when the fruits are about to mature, the soil temperature is high, which is a period of high incidence of pests and diseases, and the release of pesticides is accelerated, which is just effective in killing pests.
Phoxim microcapsule suspending agent not only solves the problem of pesticide control release, but also replaces organic solvents with water, reduces production costs, is less toxic, and is more environmentally friendly. Experts say that after the effective ingredients in the phoxim microcapsules are released in mid-July, they can be degraded into water and carbon dioxide in the soil in only 20 days, and there is still about a month before the peanuts are harvested. Therefore, There is no pollution to the soil and peanuts.
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