Controlling Techniques of Rape Locusts in Spring

Since the beginning of spring, most of Yunnan has warmed up rapidly, and the breeding tendency of locusts has accelerated significantly. The locusts that damage the rape in the province mainly include radish sprouts, cabbage sprouts, and peach aphids. Since the peach aphid prefers the back and stem bases of the rapeseed to propagate from the bottom up, the following methods should be adopted to achieve good control effects. 1. Adopt unified prevention and control time, reduce the base number of the winged plover, and avoid or reduce the chance of harm once again. 2, take the first branch and then spray. After the final flowering period of the rapeseed, the spraying channel with a width of 0.8 to 1 meters is marked by a 4-meter mark, which is favorable for the field operation and spraying of the liquid medicine evenly and comprehensively. 3, take the alternative use of pesticides, such as: the previous use of "Loss Ben" control locusts, after the first branch of the drug should be selected "golden good year" prevention and treatment, after half a month interval with 10% "permethrin" 2000- 2500 times liquid or 25% "Kayirailing" 1200 times control, in addition, in order to achieve both the rapeseed powdery mildew or downy mildew and enhance the drought resistance of rape, can add 15% "triadimefon" 2000 times liquid plus 1.5% borax 100 times and prevent powdery mildew and increase rapeseed resistance. If downy mildew is heavy, use 72% “fros of urea, manganese and zinc” 600 times liquid to prevent and cure. However, it is important to remember that there should be no more than three combinations of agents.

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