Answer: The vegetable and certain crops can be planted in the form of intercropping, interplanting, or mixed crops, which can often control or reduce the occurrence of certain pests and diseases, and thus receive the effect of “do not apply pesticides and win pesticidesâ€. Intercropping corn and spicy peppers. Due to the shade of corn, the incidence of sunburn and virus disease in peppers was 72% lower than that of monocropping field; intercropping maize and green peppers reduced the incidence of green pepper virus disease by 56.9%; Cucumber mosaic disease can be reduced 61.6%; corn intercropping cabbage, because the field temperature than the single field decreased by 0.5 °C, the ground temperature decreased by 2 °C, can reduce cabbage virus disease by more than 20%, white spot disease decreased by 18%, cabbage soft rot The incidence of downy mildew was also significantly reduced.
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