观光生态茶园刺蛾防治药剂的田间防效及对家蚕残毒试验

将经筛选的5种防治茶刺蛾药剂用于田间进行茶刺蛾防效比较，同时对三龄起蚕进行残毒试验，遴选适于茶桑混植生态园使用的兼容药剂。田间防效结果表明：0.3%印楝乳油、1.3%苦参碱乳油和4.5%高效氯氰菊酯乳油防治茶刺蛾效果较好，7 d后的防治效果为85%以上。1.1％烟百素乳油7 d后的防治效果达到79%。0.88%双素碱水乳剂7 d后的防效为86%；将5种防治茶刺蛾的药剂对家蚕进行残毒试验，结果表明：1.3%苦参碱乳油、0.3%印楝乳油、0.88%双素碱水乳剂等3种杀虫剂低浓度使用对家蚕的残留毒性较低，3龄起蚕取食喷施药剂桑叶的安全间隔期为7 d，可以在茶蚕混植区使用。

Field Efficacy of Medicamentfor Control of Tea Spiny Mothsin Tourist and Ecological Tea Gardens and Its Residual Toxicity Experiment on Silkworm

Five pesticides used in the fields were screened out to compare the control efficacy of tea spiny moths,at the same time, the experiment of residual toxicity in three-instar silkworms were conducted,the compatible pesticides applied in ecological gardens with mixed plantation of the teaand mulberry were selected. The results showed that 0.3% Azadirachtin emulsion, 1.3% Matrine emulsion and 4.5% Alphacypermethrin EC were effective in preventing and controlling tea spiny moths, and the control effect was over 85%after 7 days.The prevention and treatment effect of 1.1% Amaretto cream reached 79%. The control effect of 0.88% Pyrethr in and matrine emulsion in water was 56%; The five pesticides against tea spiny moth were applied on the silkworm, and its control effects showed that 0.3% Azadirachtin emulsion, 1.3% Matrine emulsion, 0.88% Pyrethrin and Matrine emulsion in water had low residual toxicity to silkworms. So the safe interval for feeding pesticides from the three-instar was 7 days, which could be used in mixed planting area of tea and silkworm. ;