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稻飞虱是水稻的主要害虫之一。90年代以来，国内农药厂家生产出许多防治稻飞虱的高效药剂。笔者于1999年晚季选用几种不同厂家生产的吡虫啉类农药（四季红、大功臣、蚜虱净）用于防治稻飞虱进行对比试验，探讨其使用技术，验证防治效果。1试验设计步骤1．1供试药剂及处理试验设
Planthopper is one of the major pests in rice. Since the 1990s, domestic pesticide manufacturers have produced many effective pesticides against planthoppers. In the late 1999, the author chose imidacloprid pesticides (Sijihong, big hero, and imidacloprid) produced by several different manufacturers to control planthoppers for comparative experiments and to explore their use techniques to verify their control effects. A test design step 1.1 test reagents and treatment test set