First, agricultural control. 1. Implement rotation; 2. Select anti-(resistant) disease seeds and strictly disinfect seed; 3. Cultivate strong seedlings and improve resistance; 4. Clean the garden, remove diseased leaves in time, remove diseased plants; Scientific management, balanced fertilization.
Second, physical control. For greenhouse cultivation, additional insect nets are added to the ventilation openings or yellow booby traps are suspended in the sheds.
Third, biological control. Insect pests, protect and use a variety of natural enemies, such as dragonfly bees, seven-spot ladybugs and so on.
Fourth, chemical control. The main control objects are damping-off diseases, downy mildew and other diseases, as well as insect pests such as aphids, whiteflies, and leafminers. To achieve the right remedy, alternating medication, strict control of drug dosage and safety interval.
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