Control methods:
(1) Selection of disease-resistant varieties.
(2) Strengthen cultivation management, timely cultivating, and reasonably applying phosphate fertilizer and zinc fertilizer. After the harvest, the fields were completely removed and the fields were deep-stumpaged. The diseased leaves left on the ground were turned into the soil to reduce the number of overwintering bacteria and reduce the incidence of the second year.
(3) Chemical control: 1 Seed treatment: 2% rickettine wettable powder is seeded at 0.3% of the seed amount, or 25% oxycampin wettable powder is seeded at 0.5% of the seed amount. 2 Fertility spraying: spraying at the beginning of the disease, spraying once every 10 days, spraying 2 times -3 times. The commonly used agents are: 20% rust-removing emulsifiable concentrate 400-600 times, 80% dexamethasone WP wettable 600-800 times, according to the amount of liquid 0.3% by adding neutral detergent, can improve the efficacy.
Cut Swimming Crab,Portunus Trituberculatus,Frozen Swimming Crab Cut,Frozen Half Cut Blue Swimming Crab
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