"Fat worm" is the use of fertilization to kill crop pests. This method can not only control insects and insects, but also has fertilization efficiency, and does not kill natural enemies of pests, and does not pollute the environment. The specific approach is as follows.
1. Phosphate fertilizer kills insects. Helicoverpa armigera is most afraid of phosphorus during spawning, and immediately sees phosphorus as it escapes. According to this characteristic, the cotton leaf surface is sprayed with 2% calcium perphosphate leaching solution, leaving one line every 5 rows without spraying, driving the cotton bollworm to concentrate on spawning, and then collectively killing. Another characteristic of cotton bollworms is that they see the acidic substances secreted by cotton and cluster them to lay eggs. At this time, if it is sprayed with 2% superphosphate solution, it chemically reacts with the acid secreted by cotton, which can make the eggs of the cotton bollworm hard, and the larvae can not break the shell and die.
2. Nitrogen kills insects. Use 2% urea solution or 1% ammonium bicarbonate solution, or 0.5% ammonia aqueous solution to spray outside the root when the pest occurs. These three kinds of nitrogen fertilizers have strong volatility and have fumigating and corrosive effects on pests, especially for controlling small insects with small body size and weak endurance, such as red spiders, spider mites and thrips.
3. Silicon calcium fertilizer kills insects. Silicon-calcium fertilizer is a new type of chemical fertilizer. After the silicon fertilizer is applied, silicon will accumulate in the epidermal cells of the crop to form a hard skin layer, making it difficult for pests to break in. Practice has proved that corn, sorghum, soybeans, kidney beans and other 667 square meters of application of silicon calcium fertilizer 20 kg, can avoid corn borer. Beans are harmful. Rice and wheat use 20 kilograms to 30 kilograms of silicon-calcium fertilizer per 667 square meters, which can greatly reduce the damage of armyworms.
4. Grass ash kills insects. Use 10 kilograms of grass ash to 50 kilograms of water, soak for one night, take the filtrate spray, can control the aphids on fruit trees, crop summer flowers, and add potassium fertilizer, enhance the lodging resistance of crops and the wind resistance of flowers and young fruit trees. For example, adding appropriate amount of trichlorfon in the ash of the grass can enhance the contact and fumigation effects of the liquid, and improve the killing ability of the pests such as aphids and red spiders. The control effect on aphids of fly and onion can reach more than 90%. Flowers such as rose, rhododendron, and oleander, such as aphids that are affected by the fly, can also be controlled by ash.
5. Urine washing agent kills insects. Crops, vegetables and apples use 250-500 grams of urea per 667 square meters, add 100 grams of washing powder, 50 kilograms of water, mix and make a "urine wash mixture" spray, which can control red spiders, aphids, and have a topdressing effect. .
1. Phosphate fertilizer kills insects. Helicoverpa armigera is most afraid of phosphorus during spawning, and immediately sees phosphorus as it escapes. According to this characteristic, the cotton leaf surface is sprayed with 2% calcium perphosphate leaching solution, leaving one line every 5 rows without spraying, driving the cotton bollworm to concentrate on spawning, and then collectively killing. Another characteristic of cotton bollworms is that they see the acidic substances secreted by cotton and cluster them to lay eggs. At this time, if it is sprayed with 2% superphosphate solution, it chemically reacts with the acid secreted by cotton, which can make the eggs of the cotton bollworm hard, and the larvae can not break the shell and die.
2. Nitrogen kills insects. Use 2% urea solution or 1% ammonium bicarbonate solution, or 0.5% ammonia aqueous solution to spray outside the root when the pest occurs. These three kinds of nitrogen fertilizers have strong volatility and have fumigating and corrosive effects on pests, especially for controlling small insects with small body size and weak endurance, such as red spiders, spider mites and thrips.
3. Silicon calcium fertilizer kills insects. Silicon-calcium fertilizer is a new type of chemical fertilizer. After the silicon fertilizer is applied, silicon will accumulate in the epidermal cells of the crop to form a hard skin layer, making it difficult for pests to break in. Practice has proved that corn, sorghum, soybeans, kidney beans and other 667 square meters of application of silicon calcium fertilizer 20 kg, can avoid corn borer. Beans are harmful. Rice and wheat use 20 kilograms to 30 kilograms of silicon-calcium fertilizer per 667 square meters, which can greatly reduce the damage of armyworms.
4. Grass ash kills insects. Use 10 kilograms of grass ash to 50 kilograms of water, soak for one night, take the filtrate spray, can control the aphids on fruit trees, crop summer flowers, and add potassium fertilizer, enhance the lodging resistance of crops and the wind resistance of flowers and young fruit trees. For example, adding appropriate amount of trichlorfon in the ash of the grass can enhance the contact and fumigation effects of the liquid, and improve the killing ability of the pests such as aphids and red spiders. The control effect on aphids of fly and onion can reach more than 90%. Flowers such as rose, rhododendron, and oleander, such as aphids that are affected by the fly, can also be controlled by ash.
5. Urine washing agent kills insects. Crops, vegetables and apples use 250-500 grams of urea per 667 square meters, add 100 grams of washing powder, 50 kilograms of water, mix and make a "urine wash mixture" spray, which can control red spiders, aphids, and have a topdressing effect. .
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