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植物杀灭钉螺国内外进行了大量的研究，筛选出了一些有效的植物。国外有的已在现场应用，国内有几种植物曾在现场应用，但由于用量较大，植物来源有限，只能因地制宜，就地取材使用［’］。1991年一1992年作者曾在有螺地区种植大黄，发现其花、叶、果、籽落入水中能起到一定的?
Plants kill snails at home and abroad conducted a lot of research, screening out some of the effective plants. Some foreign countries have already applied it in the field. Several plants in China have been used in the field. However, due to the large amount of resources and limited sources of plants, they can only be used locally according to local conditions [2]. From 1991 to 1992, the author once planted rhubarb in the snail area and found that flowers, leaves, fruits and seeds could fall into the water.