CAJ | 학술논문

为寻找对桑树害虫高效、对家蚕低毒且对桑树安全的杀虫剂,评价了植物源杀虫剂1%苦参·印楝素乳油10、20、40 mg/L药液在药后1、3、5、7、10、15 d对桑树的危害情况及桑叶对家蚕的残留毒性。结果显示,1%苦参·印楝素乳油各处理均对桑树无明显药害；药后3 d除40 mg/L处理的桑叶使少数家蚕中毒死亡外,其他2个处理家蚕出现拒食现象,但未见家蚕中毒死亡；饲喂1%苦参·印楝素乳油药后3~7 d各处理桑叶使家蚕4龄、5龄龄期经过与CK(清水处理)相比延长0.5~1.5 d,饲喂1%苦参·印楝素乳油药后15 d 各处理桑叶后家蚕各龄龄期经过、蛹体质量、全茧量、茧层量、茧层率等与C K差异均不显著。因此,1%苦参·印楝素乳油可以在桑园及周边使用,对家蚕的安全间隔期为15 d。
위심조대상수해충고효、대가잠저독차대상수안전적살충제,평개료식물원살충제1%고삼·인련소유유10、20、40 mg/L약액재약후1、3、5、7、10、15 d대상수적위해정황급상협대가잠적잔류독성。결과현시,1%고삼·인련소유유각처리균대상수무명현약해；약후3 d제40 mg/L처리적상협사소수가잠중독사망외,기타2개처리가잠출현거식현상,단미견가잠중독사망；사위1%고삼·인련소유유약후3~7 d각처리상협사가잠4령、5령령기경과여CK(청수처리)상비연장0.5~1.5 d,사위1%고삼·인련소유유약후15 d 각처리상협후가잠각령령기경과、용체질량、전충량、충층량、충층솔등여C K차이균불현저。인차,1%고삼·인련소유유가이재상완급주변사용,대가잠적안전간격기위15 d。
In order to investigate the high efficiency pesticide against mulberry pests and safety to silkworm and mulberry,the harm to mulberry and residual toxicities to silkworm of different concentration (10,20,40 mg/L) of 1% matrine-azadirachtin EC were evaluated when sprayed after 1 d,3 d,5 d,7 d, 10 d and 15 d. The results showed that it was not phytotoxic to mulberry in all treatments. Silkworm was found poisoning death that fed the leaves treated by 40 mg/L of 1% matrine-azadirachtin EC after 3 d, and other showed refusing to eat food. Compared with CK(water treatment),the 4th and 5th instar were prolonged 0. 5 d to 1. 5 d that fed the leaves treated after 3—7 d, and the developmental duration of survival larvae, the weight of dormant silkworm, the weight of mature silkworm, cocoon weight, cocoon shell weight in treatments of 1% matrine-azadirachtin EC showed no significant difference compared with CK when sprayed after 15 d. Therefore, 1% matrine-azadirachtin EC can be used to control pests in mulberry field, and the safety interval on silkworm was more than 15 d.