论文部分内容阅读
1.植保机械的正确选用要点一是了解防治对象(病虫作物)的危害特点及施药方法和要求。例如病虫在植物上的发生或危害的部位,药剂的剂型、物理性状及用量,喷洒作业方式(喷粉、喷雾、烟雾剂等),喷雾是常量、低量或超低量等,以便选择植保机械类型。二是了解防治对象的田间自然条件及所选植保机械对它的适应性。例如田块的平整及
1. The correct selection of plant protection machinery First, understand the harm control object (pests and diseases) characteristics and application methods and requirements. For example, plant diseases and insect pests occur on the site or harm, pharmaceutical dosage forms, physical properties and dosage, spraying operation (dusting, spraying, aerosol, etc.), spray is constant, low or low volume, etc., in order to choose Plant protection machinery type. The second is to understand the natural conditions of the object of prevention and control of the selected plant protection machinery to adapt to it. For example, the formation of fields and