The traditional way of spraying within a certain area often overlooked changes in pest disaster, resulting in the amount of pesticides in some lack of operational areas, while in some regions the amount of excess facilities. In this context, "accurate spraying," came into being. Held in the near future plant protection machinery and spraying the second international symposium on technology, the experts have to "precision spraying," Current status and development trend about it.
It is reported that "precision spraying" is the core of the relevant factors in the insect pest in the field identified on the basis of differences, there is full access to agricultural insect pest cell differentiation of space and time information, to technically feasible and economically efficient facilities drug program, accurate in every district on the spraying of pesticides, to liquid form in the best deposition on plant leaves, is to improve the effective utilization of pesticides, reduce environmental pollution, the only way to maintain sustainable agricultural development.
Beijing Agricultural Research Center for Intelligent Equipment Xiu Researcher: GPS positioning will become the next mainstream
Xiu researchers believe that, with the rapid development of GPS technology, low cost and easy to operate GPS equipment for precision spraying operation to provide accurate location coordinates of the navigation. This sampling personnel in the field walking to record real-time plots in different locations of weeds, pest and disease distribution, and then use GIS software to interpolate the distribution obtained by analysis of insect pest, insect pest in the plots obtained in the distribution, determined by the distribution of chemical pesticides sprayed prescription plans, prescription plans Finally, according to spraying to achieve a variable spray chemical pesticides. The spray machine is the core technology in support of the global positioning system to control operations on the data map. Where there are insect pest spraying, there is no place to turn off sprinklers insect pest, to the precise effects of spraying.
Nanjing Forestry University, Professor Yu Ru: electrostatic spray pesticide into the precise critical
Professor Yu Ru that electrostatic spray technology will become key technologies in precision spraying, the technology can significantly reduce the invalidity of the droplet drift and enhance penetration and deposition effects. According to the experimental data show that compared with conventional spray, electrostatic spray significantly reduced spray drift, reducing the amount of 34%, droplet deposition is almost 2 times the original. The core is the application of the technology in the nozzle and the target high voltage static electricity built up electrostatic field, when the liquid flows through the spray nozzle after charging through the appropriate methods (corona charging, induction charging, the contact charging) is sufficient to charge the formation of groups charged droplet, and then in the electrostatic force and other external force, to do directional movement of droplet adsorption on the target. It has a uniform droplet size, deposition performance, drift loss, fog distribution group, especially in the backs of the leaves of plants can also be attached to the droplet and so on.
Jiangsu University, Professor Qiu Baijing: Automatic spray will become possible on the Target
Professor Qiu Baijing said that with the graphics image processing and 3S technology, automatic target spray has become possible. Automatic target pesticide spraying machinery is the subject according to whether the target and the target feature changes are selectively target pesticide, using CCD cameras or infrared sensors to determine the area of operation of the crop, when the monitor to the target crops , immediately send the signal to the controller, the controller is to make the decision whether spraying, and then to perform variable spray nozzle to achieve the purpose of spraying on target. Tests showed that of the target pesticide spraying can effectively improve the adhesion rate of the crops, a significant reduction of pesticides in the settlement of non-target areas, to obtain a better spraying effect, to reduce production costs and reduce environmental pollution caused by pesticides .
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