Autumn cabbage manure disease prevention and control method

Soil Treatment Prior to Chinese cabbage planting, 2.5-3.5 kg phoxim granules per mu can be used. After mixing with chemical fertilizers, they can be applied to the soil to kill the eggs and larvae of the flies.

Sweet and sour liquid trapping and killing are based on the characteristics that radish flies have sucking sweet and sour liquid. 0.5 kg of sugar, 1% of vinegar, 7.5 kg of water, plus 20 g of trichlorfon powder to make a mixture. Dig a bowl of big pit every 8-10 meters in the field and put a plastic in the size of the pit. In the bag, pour 100 grams of the mixture and add the mixture every 10 days or so to kill large numbers of adults.

Ground spray When the Chinese cabbage grows to 2-3 true leaves, or 2.5% per acre with 1-1.5 kilograms of trichlorfon powder, or 0.5-1 kilograms of dimethoate powder per acre, field ground dusting Prevent seed flies from entering the field to lay eggs.

When the cabbage root grows to 6-8 leaves in Chinese cabbage, it can be mixed with grass ash, lime powder and 2.5% trichlorfon powder in a ratio of 2:1:1. It is applied around the vegetable root to prevent egg fly spawning. Kill the pre-buried larvae.

When the root of the Chinese cabbage is found to be damaged by pesticides, 90% of the crystals of dipterex can be used 1000 times, or 40% of dimethoate 1500 times, and 50% of phoxim can also be used 2000 times. Liquid irrigation, about 200 grams of liquid per plant, so that the liquid flow from the heart of the cabbage to the rhizosphere, to ensure that the roots of soil moisture, the general irrigation root 1-2 times, you can kill the earthworms.

Topdressing ammonia can also prevent the occurrence of mantle. About 30 days after the cabbage is planted, use 1 kg of ammonia water and add 1 kg of clear water. Stir well and then irrigate the roots. Fill about 150-200 grams per plant. Or combined with the autumn cabbage irrigation, the ammonia slowly poured into the running water for furrow irrigation, this will not only prevent the occurrence of mantle, but also play a role in top dressing.

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