A good recipe for beating pear planthopper
During the dormancy period of overwintering adults in the middle of March, 1500-2000 times solution of 90% acephate soluble granule can be sprayed; when pear planthopper occurs seriously, 4000-5000 times solution of 240g/L snail ethyl ester or 1500-2000 times solution of 90% acephate soluble granule can be sprayed.
1. Acephate is an oral insecticide, which has stomach toxicity and contact effect, and can kill eggs. It is suitable for vegetables, tea trees, tobacco, fruit trees, cotton, rice, wheat, rape and other crops to control a variety of chewing and piercing mouthparts pests and harmful mites and health pests.
2. Snail ethyl ester: with bi-directional internal suction and conductivity, it can effectively control all kinds of piercing mouthparts pests, such as aphids, thrips, wood lice, whitefly, whitefly and shell insects, etc. the main crops that can be used include cotton, soybean, citrus, tropical fruit trees, nuts, grapes, hops, potatoes and vegetables.
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When will winter wheat be topdressing
Winter wheat should be fertilized at seedling stage, overwintering stage, returning to green stage, jointing stage, booting stage and after heading. Farm manure was applied at seedling stage, ammonium bicarbonate or urea from overwintering to booting stage, and urea after heading. If the base fertilizer and seed fertilizer are sufficient, there is no need to topdressing at the seedling stage.
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The function of Jishuian
The function of Bishuian is to quickly adjust the PH value of water body, quickly eliminate and alleviate the aquatic biological poisoning and stress reaction caused by toxic algae and toxins caused by the degradation of organic matter in water, hypoxia floating head and so on. Effectively control and improve old green water, cyanobacteria and naked algae
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