Intercropping crops can prevent insects from disease
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Science, clever arrangement of various crop intercropping, the use of different plants unique "defense function" can play a deworming, disease prevention effect. For example, lettuce and cabbage intercropping: cabbage is most vulnerable to cabbage caterpillars, while lettuce emits a bitter taste that is very irritant and has a repellent effect on cabbage caterpillars. Adult cabbage caterpillars do not dare to approach egg-laying cabbage once they smell bitterness. Now. Intercropping between them can protect cabbage from cabbage caterpillars. In addition, loofah and eggplant intercropping can protect eggplant from spider mites. Intercropping garlic with cotton can expel "cottage" from cotton aphids and other pests. Onions, garlic and fruit trees, beans intercropping, have the role of repelling locusts. In terms of disease prevention, there are examples of disease prevention between garlic and cruciferous crops. Cruciferous vegetables such as cabbages and cabbages are highly susceptible to bacterial soft rot. If garlic is used as such, garlic plants can secrete allicin that has a strong killing effect on soft rot bacteria. Diseases naturally occur. With effective suppression, soft rot almost never occurs. Another example is the intercropping of green onions and peas. The secretion of onion can kill pea black spot pathogens in a few minutes, and it can prevent peas from being infected by black spot disease, which has the effect of preventing diseases and increasing production. Author: Guo Zhaoyang Unit: Anhui Suzhou City jiagou five willow agriculture department