1水田喷药和抛肥作业现状水稻是我国的主要粮食作物,特别是改革开放以来,我国水稻种植面积得到了迅猛增加。在水稻生产过程中,每年都有大面积的病虫草害发牛和蔓延,对确保水稻的增产增收造成了严重的影响和威胁。目前,我国仍采用传统的水稻病虫草害防治技术,即普遍采用背负式喷雾器等小型植保机具作为水稻病虫草害防治的 1 paddy field and throwing fertilizer operation status Rice is China’s main food crops, especially since the reform and opening up, China’s rice acreage has been rapidly increased. In the process of rice production, large-scale pests and diseases are being raised and spread each year, which has a serious impact on and threat to the increase of rice output. At present, our country still adopts the traditional rice pest and disease prevention and control technology, that is, the common use of knapsack sprayer and other small plant protection as a pest and disease prevention and control of rice