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本文利用连续数年在试验基地观测和调查资料，结合五省其它试验点的研究结果，探讨了林农复合系统灭螺机制及其持续灭螺方法．结果显示，林农复合系统的小气候特征、土壤环境以及实施的耕翻间种措施等不利于系统内钉螺的孳生，使钉螺体内糖原含量明显减少，SDH、LDH活性下降，蛋白质总量和氨基酸含量降低，影响了钉螺的生存和繁殖．林农复合系统动态生长以及汛期外系统钉螺随水而来会影响灭螺．采用间伐、邻近草滩发展水产养殖以及在更大范围建立林农复合系统可以持续灭螺．
In this paper, we use the data of observation and investigation in the experimental base for several years and the results of other experimental sites in five provinces to discuss the mechanism of snail-killing and the method of continuous snail-killing. The results showed that the microclimate characteristics of the agroforestry system, the soil environment and the tillage and tillage measures were not conducive to the breeding of Oncomelania snails in the system, which significantly reduced the content of glycogen, decreased the activities of SDH and LDH, and the contents of total and amino acids Reduce, affecting the snail survival and reproduction. The dynamic growth of the forest agroforestry system and the snail of the outer system during the flood season will affect the molting by the water. Continued snail control through thinning, the development of aquaculture adjacent to grassy beaches and the establishment of a complex of forest and agroforestry systems on a larger scale.