Essentials of management technology for pollution-free Chinese cabbage in spring

Scientific fertilization. It is the key to fertilize Chinese cabbage in production. When fertilizing, it should be based on decomposed organic fertilizer, and the fertilization of the fertilization as the base fertilizer. After the emergence of the seedlings, select the 1-2 times of cooked dilute manure and combine with the plant electronic fertilizer. It can be used for a long time and the effect will be better.

Control pests and diseases. In spring, the pests and diseases of Chinese cabbage are generally light, mainly including soft rot, downy mildew and aphids, cabbage caterpillars, and diamondback moths. Timely removal of weeds in the field; use of silver ash shade net to drive cockroaches, insect killing lights trap; diligent inspection, in the early stage of the hazard, high-efficiency BT emulsion 1000 times liquid + new high-fat film can enhance the efficacy and better prevent pests. When the disease occurs, 72% DuPont gram + plant cell immune factor can improve self-immunity and promote healthy growth of plants.