用同工酶电泳技术检测了枫杨水浸液处理钉螺时对钉螺酯酶同工酶的影响 .结果表明 :枫杨叶水浸液处理使钉螺酯酶带由第 1d 1 9条减至第 6d 1 0条 ,活性也随之降低 ,酶带的减少主要在正极区 ,与清水对照 ,酶带数显著减少 ,且变化也在正极区 .氯硝柳胺溶液处理的钉螺也呈现出类似结果 .实验证实 :一定质量的枫杨以水为媒介对钉螺可以产生与化学药剂 (氯硝柳胺溶液 )相近的杀灭作用 . The isoenzyme electrophoresis was used to determine the effect of the liquid extract of maple leaf on the esterase esterase isozyme during the treatment of Oncomelania snail. The results showed that the esterase activity of maple leaf decreased from 1d19 to 6d1 0, the activity is also reduced, the reduction of enzyme band is mainly in the positive area, compared with the water, the number of enzyme bands is significantly reduced, and the change is also in the positive zone .Solylitamine solution treatment of snails also showed similar results .Experiment Confirmed: a certain quality of maple Yang water as a medium of Oncomelania can produce chemicals (niclosamide solution) similar killing effect.