枫香等3种植物水浸液灭螺效果的初步研究

对枫香、无患子、博落回3种植物与枫杨、乌桕及其组合叶片水浸液抑螺效果在控湿（25±1）℃和常温两种条件下进行了比较研究，同时初步研究了博落回不同部位水浸液的杀螺效果。结果表明：（1）在控温（25±1）℃和常温条件下，单一树种枫香、无患子、博落回叶片的水浸液均有较好的灭螺活性。（2）在相同的试验条件下，枫杨＋乌桕＋枫香等组合处理与单一植物材料水浸液的灭螺效果差异不显著，枫杨＋乌桕组合对钉螺的抑制率略低于单一树种。（3）博落回不同部位灭螺效果有一定差异，根的灭螺效果明显低于叶和茎，不同部位的平均灭螺效果排序为：叶〉茎〉根。

Preliminary Study on the MoHuscacidal Effects of Water-soluble Extracts of 3 Plants including liquidambar ~ormosana

In this paper a comparative study was made on the oncomelania-control ettects of water-soluble leaf extracts of Liquidambar formosana, Sapindus mukorossi,Macleaya cordata, Pterocarya stenoptera and Sapium sebiferum and their mixtures at normal and controlled （25±1℃） temperature,,s respectively, and the oncomelania-killing effects of water-soluble extracts from different parts of Macleaya cordata were alsostudied. The following were the results. （1）The oncomelania-killing L. formosana, S. mukorossi and temperatures. （2）Under the same M. cordata were all quite good experimental conditions, there was effects of water-soluble leaf extracts of at normal and controlled （25±1℃） no marked difference in oncomelania-killing effects between the water-soluble extracts from the mixture of L. formosana ＋P. stenoptera ＋ S. sebiferum and those from their respective single species. The inhibition ratio of the mixture of P. stenoptera ＋ S. sebiferum was lower than that of the 2 single species.（3）The oncomelania-killing effects of different parts of Macleaya cordata were quite different, with those of the roots being much lower that those of the leaves and stems. The sequence of their oncomelania-killing effects were： Leaves 〉 Stems 〉 Roots.