【摘 要】
：
Non-uniformity of Pesticide spray deposition and drift was the main factors of phytotoxicity and environmental pollution during the pesticide application process.Scientific and efficient pesticide spr
【机 构】
：
College of Science,China Agricultural University,Beijing 100193,China
【出 处】
：
第五届农药与环境安全国际学术研讨会暨第四届植保机械与施药技术国际研讨会( 5th International Sympo
论文部分内容阅读
Non-uniformity of Pesticide spray deposition and drift was the main factors of phytotoxicity and environmental pollution during the pesticide application process.Scientific and efficient pesticide spray application could increase the amount of target deposition and improve the droplet penetrability,thus enhancing the pesticide effective utilization ratio to achieve the purpose of reducing the spray volume.Fan-shaped spray nozzle was widely used due of the well sprinkler performance.Besides,the droplet penetrability would be improved when the nozzle is angled respect to the traveling direction of the sprayer.This research had a further analyzes of the double-fan combined nozzle in the deposition and drift characteristic based on the theoretical study of combined nozzle.The study showed that: Compared IDK015+IDK015 and ST015+ST015 to IDK03 and ST03 respectively,double-fan combined nozzles had a higher ratio of pesticide droplet deposition than single-fan nozzles.The combination of ST015+ST015 and ST015+IDK015 had a similar amount of pesticide deposition,while ST+IDK deposited more droplets on central part and lower leaves,so the IDK nozzle had better penetrability.Under the same operating conditions,the potential drift valve of ST03 was the highest,while IDK03 was the lowest,different combinations of the nozzles had significant difference of potential drift value.The combination of nozzles with IDK can effectively reduce the droplet drift loss due to the Venturi-effect increased the size of droplet.The potential drift value capacity of six kinds of nozzle combinations was:ST015+ST015>ST03>ST015+IDK015>IDK015+ST015>IDK03> IDK015+IDK015.
其他文献
Enzyme-assisted aqueous extraction process(EAEP)is a new kind of method for making oil,which basic principle is to extract oil from plant tissue with the mixed solution of water and enzyme.Soybean res
As the nature of pre-emulsified oil,soybean oil bodies has great potentials to be used in food,cosmeticsand other applications.Soybeans contain oil bodies that are coated by a layer of oleosin protein
Peony is a famous kind of flowers in China,and its seeds contain numerous fat and protein.In order to optimize ultrasonic-assisted extraction technology for the extraction of peony seed oil frompeony
The overall goal was to encapsulate paeonia suffruticosa seed oil(PSSO)using SPI-anthocyanins complex and maltodextrin by spray drying.The present work reported oil extracted by aqueous enzymatic meth
During the process of microwave heating,the soybean oil in the fried potato chips occurs a series of chemical reactions because of the influence of temperature,electromagnetic wave and so on.This kind
Pyraoxystrobin is a novel strobilurin fungicide with excellent and broad spectrum antifungal efficiency.However,the toxic effects of pyraoxystrobin on fish are still limited.In the present study,zebra
Pyruvate dehydrogenase complex(PDHc)is already known as a site of action of herbicides [1],however so far none of the inhibitors of pyruvate dehydrogenase was developed as commercial herbicide.In orde
Spring continually is the working way of traditional orchard spring machine.Large gap exist in small orchard trees and the trees are sparse.Spring in the gap not only waste of pesticide,but also pollu
In order to improve the automatic working performance of orchard sprayer,an automatically variable-rate orchard sprayer based on LIDAR(Light Detection and Ranging)was developed.The high-precision scan
Peptide pesticide has been widely studied because of its safety and low toxicity.With the application of peptide,its promoting effects to plants have been reported[1].These studies provide a possibili