手动喷雾器低量喷雾是对旧药械的改革和提高,它克服了手动喷雾器常量喷雾速度慢、工效低、效果差等缺点。淮阳县从1982年开始引进手动喷雾器低量喷雾技术,当年试验示范达3万亩次,深受农民欢迎。1983年推广低量喷头片3万枚,防治棉花虫害20万亩,防治其它作物害虫、根外追肥、喷洒植物生长激素20多万 Manual spray low spray is the reform and improvement of the old drug, it overcomes the manual spray constant spray slow, low efficiency, poor results and other shortcomings. Huaiyang County since 1982, the introduction of low-volume spray sprayer manual, then test demonstration up to 30000 acres, welcomed by farmer. In 1983 the promotion of low-volume nozzle film 30,000, prevention and control of cotton pests 20 million mu, prevention and control of other crop pests, root top dressing, spraying plant growth hormone more than 20 million