实行生产责任制后,原来大型背负式机动弥雾喷粉机,由于价格高昂,操作复杂,经常发生故障,已不适应个体户使用,因而小型手动喷雾器急剧增加。当前存在的问题是工作效率低,防治成本高。为了使手动喷雾器达到经济、安全、有效的防治目的,我们进行了改装试验,收到了比较理想的效 After the implementation of the production responsibility system, the original large knapsack motorized mist sprayer, due to the high price, complicated operation and frequent failures, was not suitable for self-employed, so a small manual sprayer increased sharply. The current problems are low work efficiency and high prevention and control costs. In order to make manual sprayer to achieve economic, safe and effective control purposes, we conducted a modification test, received the ideal effect