Autumn cabbage mantle disease prevention and treatment method
Soil treatment Before the cultivation of Chinese cabbage, 2.5~3.5 kg of phoxim granules per acre can be used, mixed with chemical fertilizer and applied into the soil to kill the eggs and larvae of the fly. The sweet and sour liquid traps and kills according to the characteristics of the radish flies which have the characteristics of sucking sugar and vinegar. Use 0.5 kg of sugar, 1 kg of vinegar, 7.5 kg of water, and add 20 g of trichlorfon powder to make a mixture. Dig a large bowl of pits every 8 to 10 meters in the field, and put a plastic according to the size of the pit. Bag, pour 100 grams of the mixture, add the mixture every 10 days or so, which can kill a large number of adults. Ground spraying When the Chinese cabbage grows to 2~3 pieces of true leaves, or 2.5% trichlorfon powder 1~1.5kg per acre, or 0.5~1kg of dimethoate powder per acre, spray the ground in the field to Prevent breeding flies from entering the field to lay eggs. When the Chinese cabbage is grown to 6~8 leaves, it can be mixed with ash, lime powder and 2.5% trichlorfon powder in a ratio of 2:1:1, spread around the roots of the vegetables to prevent the eggs from laying eggs and Kill the larvae before entering the soil. When the roots of the Chinese cabbage are found to have root damage, 90% of the crystal trichlorfon 1000 times solution, or 40% of the dimethoate 1500 times solution, or 50% of the phoxim emulsifiable concentrate 2000 times. The liquid is irrigated, and each plant is filled with about 200 grams of liquid, so that the liquid flows from the heart of the cabbage to the rhizosphere to ensure that the roots are moist. Generally, the roots are irrigated 1 or 2 times to kill the mantle. The application of ammonia can also prevent the occurrence of mantle. About 30 days after the planting of cabbage, use 1 kg of ammonia water, add 1 kg of water, stir evenly, and fill the roots, each plant is filled with 150~200 g. Or combined with autumn cabbage irrigation, the ammonia water is slowly poured into the running water for furrow irrigation, which can prevent the occurrence of mantle and play a role of top dressing. This article URL: Autumn cabbage disease prevention method • UNIVERSAL HAND TOOL - Widely applied to achieve a damage-free removal and easy installation of the spark plug on a car or motorcycle. Suitable for most of the models. Car Wrench,Ratchet Wrench Power Tool Kit,Universal Socket Multi-Function Wrench,Multi-Function Hand Tool Wrench Ningbo Zhihao Car Accessories Co.,Ltd. , https://www.zhihaoautoparts.com