第二届植保机械与施药技术国际学术研讨会论文集

章节摘录

　　我国农药的有效利用率极低，大约有60％～80％的农药因使用不当而浪费。施药后到达害虫靶标的量不足使用量的1％，只有约0.03％的药剂起到杀虫作用，防治效果不尽理想。为了达到更好的喷杀效果，农民总是盲目加大用药量，甚至随意混配药剂，增加用药次数，使农药的用量不断上升。在我国农村普遍采用高容量喷雾技术，这种喷雾技术不仅不利于药效的发挥，而且造成药液大量流失。农药的使用技术是当前农产品高效安全生产的关键技术。只有研究和推广农药精准使用技术，才能从源头上解决农产品的安全性问题，才能在保证防治效果的前提下大幅度减少农药用量，从而大幅度降低农业生产成本，提高农产品品质和经济效益，更好地保护农业生态环境，实现农业可持续发展。　　2影响农药利用率的主要因素　　影响农药利用率低的主要原因是药液在靶标作物上的沉积量，影响药液在靶标植物上的沉积量的因素很多。药液的pH值、表面张力、黏度等对雾滴的形成以及雾滴能否在靶标植物上沉积有很大影响；靶标植物叶片的形态、大小、生长方向及表面蜡质（表面蜡质的组成与结构随叶片的生长发育阶段及环境条件而异）等会影响药液的沉积；靶标植物叶片面积与芽面积的比例、子叶面积与叶片面积的比例以及叶片的互相覆盖程度等对药液沉积也有影响；喷雾器械的施药液量、产生的雾滴大小以及对雾滴云的推力也影响药液的沉积。

书籍目录

Part One  第一部分　A Study of Dosage Adj ustment for Pesticide Application in Vineyards　Dosage Adj ustment for Pesticide Application in Orchards and Vineyards　Canopy Related Dosing and Spray Application in Top Fruit—Influence on Target Coverage　Field Measurements of Spray Drift Potential in Strawberry　Potential Operator Exposure when Spraying in a Strawberry and Raspberry Tunnel System versus a 　Conventional Open Field　On—line Mixing Pesticide Technology on Variable Rate Spray　Simulation of Spraying Bar with Oblique Rope TeeJet Nozzle Design and Atomizing Techniques　Drift mitigation in fruit crops—airflow adj ustment is the answer！　Seeing is believing—enhancing the Pygmalion effect  Computer Simulation of Spray Droplet and Canopy Interactions to Minimise Environmental and Public Health Risk of Pesticides　A global survey on the performance of side lever knapsack sprayers when judged by ISO 19932　The Discovery and Application of Spinosad，a Green Insecticide  Current situation and development trends of chemical application techniques for arable crops in Europe  Decision support for plant protection with use of mobile devices　Research Present State of Orchard Air-assisted Spray Technology in China　Develop On Automatic Testing And Controlling System of the Fan Performance　Spray pesticide constant pressure controlled system design in mountainous orchard  WEB-based Intelligent Diagnosis System for Cotton Diseases Control  Research on the sprayer chassis systems used in the high-density orchard  Visual servoing system used in agriculture  Structural analysis of droplets from anti-drift nozzle　The progress on applied techniques of boomsprayer in Heilongjiang Province　Study of deposition efficiency under different collection devices　The Application of Electrolyzed Water on plant protection　The numerical simulation of pesticide recycling system with rotary air curtain　Measurement method of spray droplet size and velocity　Experimental Study of Droplets Deposition and Distribution of Air—assisted Spraying of Disk Fan  Development of Automatically Infrared Detection Sprayer based on Color Recognition　Research on target Agrochemical Spray Robot in Greenhouse　A walking self-propelled high space boom sprayer　Research on Spout Atomizing Performance of Air—blast Sprayer for Grasshopper Control　Studied on the atomization characteristics of the gas—liquid two—phase inducting 　Research Progresses on Spraying Nozzles in Plant Protection Machinery　Study on Effects on Two Different Flow Deflector Structures of Duct Flow Field　Study on air-flowing distribution character of greenhouse air“assisted sprayer based on CFD　Research on Influence of Crop Canopy Structure on Droplets Deposit Distribution　Study on the Relationship Between Three Kinds of Pesticides Concentration and BSF　……Part Two  第二部分Other　其他

作者简介

《第二届植保机械与施药技术国际学术研讨会论文集》主要介绍了植保机械、植保机械喷头磨损研究进展、我国果园风送式喷雾技术研究现状、气液两相感应式静电喷头雾化特征研究、草原灭蝗风送式喷雾机喷筒雾化性能研究、风机性能自动测控系统开发、山地果园喷药恒压控制系统设计、不同收集装置对雾滴沉积影响的研究、一种手扶自走式高地隙喷杆喷雾机的设计开发、密植型果园喷雾机底盘系统的研究、旋转风幕式药液回收循环系统的数值模拟、防飘喷头的雾滴结构分析、黑龙江垦区喷杆喷雾机使用技术进展、两种不同结构的导流板对风筒流场的影响、减少果树中的飘失——气流调整是答案、提高皮格马利效应方法研究等内容。

图书封面

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