植物杀螺剂麻风树籽杀螺筛选的报告

MOLLUSCICIDALEFFECTOFPLANTMOLLUSCICIDE JATROPHACURCASSEED(JCS) INLABORATORYANDFIELD

对麻风树籽（ＪＣＳ）不同制剂杀灭钉螺筛选实验观察，发现２ 号粉剂和６ 号水剂具有良好的杀钉螺效果。２ 号浓度１０ｍｇ／Ｌ，６ 号浓度６－２５ｍｇ／Ｌ，浸杀钉螺７２ｈ 死亡率均为１００－０ ％ 。现场喷洒剂量６ｇ／ｍ２ ，５ｄ 钉螺死亡率均为１００－０％ 。２ 号粉剂急性鱼类毒性试验结果ＬＣ５０ 为６９６－３１ｍｇ／Ｌ。该两种制剂进一步提纯和定型后，具有大批量生产和在疫区推广使用的价值。

The molluscicidaleffect of different preparations ofplant molluscicideJCS(Jatropha curcasseed) against On comelania hupensishasbeen examinedinlaboratory andfield .No.2 JCSand No .6 JCSshowed a higher molluscici daleffect.i.e.100-0 % ofsnail mortalityrate were observedasthesnail wasim mersedin 10mg/L(No.2 JCS) and 6-25mg/L(No.6 JCS)for72 hoursrespectively whilethesnail mortalityratereached 100 .0 % 5 daysafterspraying6g/m2 of No.2 and No.6 JCSin field trial.In addition ,LC50 of No.2 JCSacute toxicity to fish reached 696-31 mg/L.