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在实验室条件下，就常用农用化学品（杀虫剂、除草剂及氮肥）对三带喙库蚊幼虫（ＣｕｌｅｘｔｒｉｔａｅｎｉｏｒｈｙｃｈｕｓＧｉｌｅｓ）的杀伤作用及几种除草剂对稻田害虫天敌的优势种拟水狼蛛（Ｐｉｒａｔａｓｕｂｐｉｒａｔｉｃｕｓ）的直接杀伤作用进行了测定，结果表明，多数农用化学品对蚊幼虫有严重的直接杀伤作用，包括广谱性杀虫剂、除草剂中的丁草胺、除草醚及尿素。而且，广谱性杀虫剂，如氧化乐果、甲胺磷和久效磷其１０ｄ残效杀伤力仍达极显著水平。而除草剂的残效杀伤力较小。此外，尽管供试的５种除草剂中有４种对拟水狼蛛无明显直接杀伤作用，但丁草胺的２４ｈ杀伤力较高，ＬＣ５０值为２２８．５５ｍｇ／Ｌ。并就试验结果对稻田ＩＰＭ的意义进行了讨论。
Under laboratory conditions, the killing effect of agrochemicals (insecticides, herbicides and nitrogenous fertilizers) on Culex tritereniorhychus Giles and the dominant herbivores on natural enemies of paddy fields were studied. (Piratasubpiraticus). The results showed that most agrochemicals have serious direct killing effects on mosquito larvae, including broad-spectrum insecticides, butachlor, herbicides and urea in herbicides. Moreover, the broad-spectrum insecticides, such as omethoate, methamidophos and monocrotophos, have a very significant 10-day residual lethality. The residual lethality of herbicides smaller. In addition, although four of the five herbicides tested had no direct killing effect on the tarantula, the butachlor showed a higher cytotoxicity at 24 h, with an LC50 value of 228.55 mg / L. The significance of the test results on IPM in paddy fields was also discussed.