First, the disease prevention and control: The production mainly has spot blotch, in the early stage of the disease, the use of biological pesticides green taibao prevention. 600-700 times the concentration of spraying, spraying once every 7-10 days, and even spray 2-3 times, with good early and late spraying effect. Before we get into the winter, weeds and litter in the fields are removed. 2. Insect pest control: Infestation of gentian occurs during the growth period. As long as toxic soil is used during soil preparation, pests will not occur during the growth period.
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