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农业病虫害的化学防治法具有效果高、收效快、成本低、易于推广等很多优点。在今后二三十年內仍将是重要防治措施之一。但在黑龙江省还不能普遍应用。主要原因是:(一)耕地面积大,劳力不足。(二)施药器械数量少质量也較差。(三)作物成长封垅后,人、畜及施药器械出入不便,因此必需寻求高效价廉、节省劳力的施药方法。鉴于国內外利用烟剂防治卫生、仓庫及森林等害虫的成功事例,
Chemical control of agricultural pests and diseases with high efficiency, fast, low cost, easy to promote and many other advantages. In the next two or three decades will still be one of the important prevention and treatment measures. However, it can not be widely used in Heilongjiang Province. The main reasons are: (i) large arable land and insufficient labor. (B) the number of pesticides less quality and poor. (C) crop growth Encapsulated, people, livestock and facilities for access inconvenience, it is necessary to seek efficient and inexpensive, labor-saving methods of application. In view of the successful examples of using domestic and foreign tobacco agents to control pests such as health, warehouses and forests,