Pesticides are important agricultural production materials. Scientific use of pesticides to control crop diseases, pests and weeds is one of the important means to ensure high quality, high yield and high efficiency of agricultural production. However, due to the fact that most of the rural areas in China are scattered pesticides, the use of pesticides and the use of pesticides are very backward, and they cannot be used scientifically. This has caused a lot of waste of pesticides, and has also caused poisoning of humans and animals, crop phytotoxics and resistance. A series of problems such as the emergence of sexuality, the decline of control effects, and environmental pollution have caused great losses to agricultural production and people's lives.
After years of research, Chinese scientists have established the theory and application of "pesticide-to-target spraying". Practice has proved that this new technology can increase the effective precipitation rate of pesticides on crops from about 30% of the original application method to more than 60%, the amount of pesticides entering the environment is reduced by 1/2, and pesticides are saved by 50% to 90%. Use about 90% water. Here are a few of the advanced techniques for applying new drugs:
Low-volume spray technology refers to the use of a small amount of pesticide stock solution diluted with water per unit area, and the water consumption is equivalent to 1/5~1/10 of the conventional spray technology. This technology is very simple to use, just replace the large aperture spray of a conventional spray machine with a small aperture spray with a diameter of 0.3 mm. The use of this technology can greatly improve the efficiency of work, reduce the loss of pesticides, save a lot of water, significantly improve the control effect, and effectively overcome the wet damage caused by conventional spray to the greenhouse. This technology, especially suitable for greenhouse and water-scarce mountain applications, is very popular among farmers.
Electrostatic spray technology is installed on the spraying machine, and a high-voltage static electricity generating device is installed. The high-pressure static electricity generating device is used to increase the deposition amount of the chemical liquid sprayed on the surface of the crop blade, and the effective utilization rate of the pesticide reaches 90%. Thereby avoiding a large number of pesticides entering the farmland soil and the atmospheric environment ineffectively.
"Pelletizing" application technique This application technique is applicable to paddy fields. For the water-soluble pesticides used in paddy fields, the "pelletization" application technique works well. Simply apply the processed pills evenly to the farmland, which can increase the work efficiency by more than ten times than the conventional application method, and there is no pesticide drift phenomenon, which effectively prevents the crop stems and leaves from being damaged, and does not pollute the adjacent ones. crop.
The recirculating spray technique redesigns the conventional sprayer with a drug return device on the opposite side of the spray component. Collecting the liquid that has not been deposited on the target plant and pumping it back into the medicine box can recycle the pesticide, which can greatly improve the effective utilization rate of the pesticide and avoid the inefficient loss of the pesticide.
Roller smear technology This technique is mainly applicable to systemic herbicides. The liquid medicine is oozing out from the surface of the medicine roll by a medicine roller (made of a foam material capable of absorbing the liquid medicine), and the medicine roller only needs to contact the blade of the upper part of the weed to be effective. This method of application can almost completely apply the agent to the surface of the target plant, and there is no leakage or dripping of the drug solution, and the utilization rate of the pesticide can reach 100%.
Electronic computer application technology This technology has been promoted in developed countries such as the United States. It uses an electronic computer control system for the orchard sprayer, which determines the shape of the fruit tree by means of an ultrasonic sensor, so that the spray characteristics of the pesticide are always automatically adjusted according to the shape of the fruit tree. The electronic computer control system is used for pesticide application, which can greatly improve the operation efficiency and the effective utilization rate of pesticides. The emergence of this new technology represents the development direction of pesticide use technology. It has been adopted by some scientific research units in China, and the application effect is very good.
The above several new techniques for pesticide application not only have good control effect and high work efficiency, but also greatly reduce the use of pesticides, and also protect the ecological environment. They show great economic, ecological and social benefits, and have broad application prospects, which are worthy of local conditions. Promote.
(Senior agronomist of Agricultural Bureau of Changle County, Shandong Province)
Author: Jaden three
Source: Farmers Daily
After years of research, Chinese scientists have established the theory and application of "pesticide-to-target spraying". Practice has proved that this new technology can increase the effective precipitation rate of pesticides on crops from about 30% of the original application method to more than 60%, the amount of pesticides entering the environment is reduced by 1/2, and pesticides are saved by 50% to 90%. Use about 90% water. Here are a few of the advanced techniques for applying new drugs:
Low-volume spray technology refers to the use of a small amount of pesticide stock solution diluted with water per unit area, and the water consumption is equivalent to 1/5~1/10 of the conventional spray technology. This technology is very simple to use, just replace the large aperture spray of a conventional spray machine with a small aperture spray with a diameter of 0.3 mm. The use of this technology can greatly improve the efficiency of work, reduce the loss of pesticides, save a lot of water, significantly improve the control effect, and effectively overcome the wet damage caused by conventional spray to the greenhouse. This technology, especially suitable for greenhouse and water-scarce mountain applications, is very popular among farmers.
Electrostatic spray technology is installed on the spraying machine, and a high-voltage static electricity generating device is installed. The high-pressure static electricity generating device is used to increase the deposition amount of the chemical liquid sprayed on the surface of the crop blade, and the effective utilization rate of the pesticide reaches 90%. Thereby avoiding a large number of pesticides entering the farmland soil and the atmospheric environment ineffectively.
"Pelletizing" application technique This application technique is applicable to paddy fields. For the water-soluble pesticides used in paddy fields, the "pelletization" application technique works well. Simply apply the processed pills evenly to the farmland, which can increase the work efficiency by more than ten times than the conventional application method, and there is no pesticide drift phenomenon, which effectively prevents the crop stems and leaves from being damaged, and does not pollute the adjacent ones. crop.
The recirculating spray technique redesigns the conventional sprayer with a drug return device on the opposite side of the spray component. Collecting the liquid that has not been deposited on the target plant and pumping it back into the medicine box can recycle the pesticide, which can greatly improve the effective utilization rate of the pesticide and avoid the inefficient loss of the pesticide.
Roller smear technology This technique is mainly applicable to systemic herbicides. The liquid medicine is oozing out from the surface of the medicine roll by a medicine roller (made of a foam material capable of absorbing the liquid medicine), and the medicine roller only needs to contact the blade of the upper part of the weed to be effective. This method of application can almost completely apply the agent to the surface of the target plant, and there is no leakage or dripping of the drug solution, and the utilization rate of the pesticide can reach 100%.
Electronic computer application technology This technology has been promoted in developed countries such as the United States. It uses an electronic computer control system for the orchard sprayer, which determines the shape of the fruit tree by means of an ultrasonic sensor, so that the spray characteristics of the pesticide are always automatically adjusted according to the shape of the fruit tree. The electronic computer control system is used for pesticide application, which can greatly improve the operation efficiency and the effective utilization rate of pesticides. The emergence of this new technology represents the development direction of pesticide use technology. It has been adopted by some scientific research units in China, and the application effect is very good.
The above several new techniques for pesticide application not only have good control effect and high work efficiency, but also greatly reduce the use of pesticides, and also protect the ecological environment. They show great economic, ecological and social benefits, and have broad application prospects, which are worthy of local conditions. Promote.
(Senior agronomist of Agricultural Bureau of Changle County, Shandong Province)
Author: Jaden three
Source: Farmers Daily
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