What are the new technologies for pesticide application?

Low-volume spray technology refers to the application of the unit area, the pesticide stock solution is slightly diluted, and the water consumption is equivalent to one-fifth to one-tenth of the conventional spray technology. According to the pesticide network , this technology has improved the efficiency of the work, and it has not only been widely used in greenhouses. Japan has also developed a low-volume sprayer suitable for use in large fields.

The electrostatic spray technology uses a high-voltage electrostatic generating device to electrically spray the droplets. The deposition amount of the liquid droplets on the surface of the blade is significantly increased, and the effective utilization rate of the pesticide can be increased to 90%. The disadvantage is that the charged droplets are on the plant layer. Penetration is weak. This technology has been widely used in the control of cotton bollworm in Africa.

Pelletizing and applying technology For the water-soluble agent used in paddy fields, the pelletizing application technique can be adopted, and the pill can be evenly spread in the farmland by hand, the work efficiency is increased by a factor of ten, and there is no pesticide drift. Does not pollute adjacent crops. This technology has been applied in the sericulture area in southern China.

The recirculating spray technology redesigns the conventional spray equipment. A drug recovery device is installed on the opposite side of the spray component, and the liquid medicine not deposited on the target plant is collected and then pumped back to the liquid tank for recycling. Improve the effective utilization of pesticides. This technology has been widely used in Europe and the United States.

The medicine roller application technology is mainly used for the systemic herbicide, and the liquid medicine is exuded from the surface of the medicine roller through a medicine roller (a plaster roller made of a foam material capable of absorbing the liquid medicine), and only needs to be in contact with the weeds. The upper blade works. This method has been developed in Europe and the United States to develop a variety of "smear machinery" to meet the needs of a variety of occasions.

The application of electronic computer technology is based on the modern electronic computer control technology. The photoelectric element is used as a sensor. When the target is “discovered” under the nozzle, the liquid medicine is sprayed, otherwise the nozzle stops spraying. The computer control system has been used in the United States for orchard sprayers. The system determines the shape of the fruit tree by means of ultrasonic sensors. The computer control system automatically adjusts the pesticide spray characteristics according to the shape of the fruit tree. This technology greatly improves the effective utilization of pesticides and represents the direction of pesticide use technology.

The above technologies can greatly reduce the amount of pesticides, can save pesticides by 50% to 95%, and can greatly reduce or substantially eliminate the possibility of pesticides spraying onto non-target plants, thereby greatly reducing environmental pollution.