Answer: 1. Cover the insect nets Conditional solar greenhouses Promote the coverage of insect nets, can effectively prevent the invasion of foreign cotton bollworm, can basically eliminate the damage of cotton bollworm.
2. Strengthen cultivation and management After harvesting the crops in front of the solar greenhouse, clear the garden, plowing, and watering in time to destroy the underground diverticulum of the bollworm, making it difficult for adults to emerge. During the growth of tomato, combine pruning, snoring, and removing eggs and fruit to reduce the number of insects in the field.
3. Chemical control Prevent and cure pests in the field and spray pesticides in time. The commonly used agents are: 1.8% avermectin EC 2000 times, or 4.5% cypermethrin EC 1000 times, or 2.5% cyfluthrin EC 2000 times, or 10% cypermethrin EC 1500 times. According to the occurrence of cotton bollworm, once every 7 to 10 days, continuous control of 2 or 3 times. Please note that the spray time of the pesticide is preferably in the younger age when the larvae have not fallen into the fruit of the tomato. The key part of the spraying is the top of the plant. Http://Content/de69648b-46c7-4fe8-890e-81044f06bd05?cType=2
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