Chemical pesticides prevent crop pests and diseases, and they have the advantages of quick effect, high control efficiency, and easy use. For many years, they have been used as a "magic weapon" to control pests and diseases. However, with the passage of time, the resistance of pests and diseases continues to increase, the effectiveness of control continues to decline, and the ecological environment continues to be destroyed.
China has accumulated a lot of good experience in combating crop diseases and insect pests. For example, the combination of chemical pesticides and fertilizers can not only prevent and control various diseases and insect pests in crops, but also have the effect of increasing production costs and environmental protection. It is generally more effective than single-use pesticides, which can save 30% to 60% of pesticides, save 2 to 3 labors per mu, and reduce the cost of mu by 50 to 90 yuan.
Trichlorfon plus grass-grass-grasswood-ash is a high-quality farmyard fertilizer, and it also has the function of controlling crop pests and diseases. 50 kg per hectare of sifted hay ash, mixed with 2.5% trichlorfon powder 2 kg, the effect of preventing and treating cotton fume is as high as 98%. After 7 days of interval control, the damage can be controlled more than by Pesticides can save 50%. Because of trichlorfon and dichlorvos, they are sensitive to crops such as sorghum, corn and soybeans and are prone to phytotoxicity. Do not use them on such crops.
Dimethoate is rich in vinegar and vinegar. The organic acids contained in the fruit are good for the killing of some viruses, pathogens and sucking pests. The sugars, amino acids, etc. contained in it are the nutrients required by the crops and have a certain role in increasing production. Because vinegar can soften the body wall of insects and enhance the penetration of liquid medicine, mixing with acidic pesticides can improve the control effect. Mix vinegar with 40% dimethoate and water in a ratio of 1:1:1000 and apply 50-70 kg per acre to control locusts, red spiders, thrips, leaf miners, wheat leaf bees, etc. Insect pests can kill up to 90%, saving 40% more pesticides than Dimethoate alone and increasing production by about 5%.
Urea preparations (a) Urea and dichlorvos: Use 80% dichlorvos per acre 25 ml, urea 0.5 kg, add 50 kg of water and mix them before use. Spray once every 7 days, on chewing mouthparts for vegetables, fruit trees, food crops, etc. The pest control effect of sucking and sucking mouthparts is 95%, which can save about 50% of pesticides and increase crop yield by more than 6%. (2) Urea and dimethoate: After mixing 40% dimethoate EC 50 ml, urea 0.5 kg, and water 60 kg per acre, it can prevent and control various insect pests such as aphids, thrips, and leaf miners, and have significant effect on yield increase. .
Dimethoate and Diammonium Phosphate (50 kg per mu). Add 0.5 kg of diammonium phosphate and 30 ml of 40% omethoate to prevent pests such as spider mites, aphids, thrips, and cotton bollworms on grain and cotton crops. The effect is more than 90%, once a week, 3 times in a row, which not only effectively controls pests, but also increases crop yield by 10%.
The superphosphate dilutions against oxalic acid secreted by cotton plants can attract cotton bollworms to lay eggs and their fear of phosphorus. During the spawning of cotton bollworms, 2% superphosphate fertilizer solution or 0.3% potassium dihydrogen phosphate solution was used. The top of the cotton plant is sprayed with 50-70 kg per acre. And do 10 lines per spray, leaving 3 lines do not spray, driving the cotton bollworm focused on the non-phosphorus-producing cotton plant eggs. Then use egg-killing pesticides such as isocarbophos, focusing on preventing and controlling non-sprayed cotton plants, which can save more than 50% of pesticides and labor. Sprayed phosphorus reacts with the oxalic acid secreted by the cotton plant to produce calcium oxalate, which loses its ability to attract the bollworm; the phosphorus can harden the egg shell of the bollworm, causing its larvae not to hatch and hatch and die; phosphorus There is also the role of preventing premature aging of cotton, promoting maturity, increasing yield, and improving fiber quality.
Although the above-mentioned preparations are not as fast as insecticides, they are popular because they have yield-increasing, cost-saving, environmental protection, and are not resistant to drug resistance. Preparations should be used with the equipment and should not be stored. Spraying should be meticulous and thoughtful, so that the entire plant adheres to the liquid. And strict preparation methods, scope of use, dosage, concentration, to avoid the occurrence of phytotoxicity, to ensure control effectiveness.
China has accumulated a lot of good experience in combating crop diseases and insect pests. For example, the combination of chemical pesticides and fertilizers can not only prevent and control various diseases and insect pests in crops, but also have the effect of increasing production costs and environmental protection. It is generally more effective than single-use pesticides, which can save 30% to 60% of pesticides, save 2 to 3 labors per mu, and reduce the cost of mu by 50 to 90 yuan.
Trichlorfon plus grass-grass-grasswood-ash is a high-quality farmyard fertilizer, and it also has the function of controlling crop pests and diseases. 50 kg per hectare of sifted hay ash, mixed with 2.5% trichlorfon powder 2 kg, the effect of preventing and treating cotton fume is as high as 98%. After 7 days of interval control, the damage can be controlled more than by Pesticides can save 50%. Because of trichlorfon and dichlorvos, they are sensitive to crops such as sorghum, corn and soybeans and are prone to phytotoxicity. Do not use them on such crops.
Dimethoate is rich in vinegar and vinegar. The organic acids contained in the fruit are good for the killing of some viruses, pathogens and sucking pests. The sugars, amino acids, etc. contained in it are the nutrients required by the crops and have a certain role in increasing production. Because vinegar can soften the body wall of insects and enhance the penetration of liquid medicine, mixing with acidic pesticides can improve the control effect. Mix vinegar with 40% dimethoate and water in a ratio of 1:1:1000 and apply 50-70 kg per acre to control locusts, red spiders, thrips, leaf miners, wheat leaf bees, etc. Insect pests can kill up to 90%, saving 40% more pesticides than Dimethoate alone and increasing production by about 5%.
Urea preparations (a) Urea and dichlorvos: Use 80% dichlorvos per acre 25 ml, urea 0.5 kg, add 50 kg of water and mix them before use. Spray once every 7 days, on chewing mouthparts for vegetables, fruit trees, food crops, etc. The pest control effect of sucking and sucking mouthparts is 95%, which can save about 50% of pesticides and increase crop yield by more than 6%. (2) Urea and dimethoate: After mixing 40% dimethoate EC 50 ml, urea 0.5 kg, and water 60 kg per acre, it can prevent and control various insect pests such as aphids, thrips, and leaf miners, and have significant effect on yield increase. .
Dimethoate and Diammonium Phosphate (50 kg per mu). Add 0.5 kg of diammonium phosphate and 30 ml of 40% omethoate to prevent pests such as spider mites, aphids, thrips, and cotton bollworms on grain and cotton crops. The effect is more than 90%, once a week, 3 times in a row, which not only effectively controls pests, but also increases crop yield by 10%.
The superphosphate dilutions against oxalic acid secreted by cotton plants can attract cotton bollworms to lay eggs and their fear of phosphorus. During the spawning of cotton bollworms, 2% superphosphate fertilizer solution or 0.3% potassium dihydrogen phosphate solution was used. The top of the cotton plant is sprayed with 50-70 kg per acre. And do 10 lines per spray, leaving 3 lines do not spray, driving the cotton bollworm focused on the non-phosphorus-producing cotton plant eggs. Then use egg-killing pesticides such as isocarbophos, focusing on preventing and controlling non-sprayed cotton plants, which can save more than 50% of pesticides and labor. Sprayed phosphorus reacts with the oxalic acid secreted by the cotton plant to produce calcium oxalate, which loses its ability to attract the bollworm; the phosphorus can harden the egg shell of the bollworm, causing its larvae not to hatch and hatch and die; phosphorus There is also the role of preventing premature aging of cotton, promoting maturity, increasing yield, and improving fiber quality.
Although the above-mentioned preparations are not as fast as insecticides, they are popular because they have yield-increasing, cost-saving, environmental protection, and are not resistant to drug resistance. Preparations should be used with the equipment and should not be stored. Spraying should be meticulous and thoughtful, so that the entire plant adheres to the liquid. And strict preparation methods, scope of use, dosage, concentration, to avoid the occurrence of phytotoxicity, to ensure control effectiveness.
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