农业部利用棉花生产基金加强施药机械项目国内竞争性招标课题“新型背负式喷雾喷粉机研制开发”是我国施药机械领域第一个招标项目，自１９９５年４月签订合同后，经过一年多的努力，完成了合同规定的研制内容，主要工作部件前弯短叶片全塑小型高速离心风机设计先进，风量、风压、效率、功耗、噪声等指标都优于国外９０年代同类产品，近二年生产３万多台，其中２万多台出口韩国、东南亚等地，创汇３７５万美元，经济效益较好。 Ministry of Agriculture uses cotton production fund to strengthen domestic competitive bidding project of spraying machinery project “New Knapsack Spray Duster Research and Development” is the first bidding project in the field of pesticide application in China. After signing the contract in April 1995, after a More years of efforts to complete the contract content of the development, the main components of the work before bending the whole plastic small high-speed centrifugal fan design advanced, air volume, wind pressure, efficiency, power consumption, noise and other indicators are better than similar foreign products of the 1990s Over the past two years, it has produced more than 30,000 sets, of which more than 20,000 sets have been exported to South Korea, Southeast Asia and other places with foreign exchange earning 3.75 million U.S. dollars. The economic benefits are good.