开展了静电喷雾与非静电喷雾48%噻虫啉悬浮剂和2%噻虫啉微胶囊悬浮剂防治马尾松毛虫Dendrolimus punctatus(Walker)和蜀柏毒蛾Parocneria orienta Chao林间试验。试验结果表明:使用相同浓度药液,静电喷雾的防治效果明显优于非静电喷雾...开展了静电喷雾与非静电喷雾48%噻虫啉悬浮剂和2%噻虫啉微胶囊悬浮剂防治马尾松毛虫Dendrolimus punctatus(Walker)和蜀柏毒蛾Parocneria orienta Chao林间试验。试验结果表明:使用相同浓度药液,静电喷雾的防治效果明显优于非静电喷雾的防治效果,药液浓度越低,增效幅度越大;静电喷雾低浓度药液与非静电喷雾高浓度药液能获得同样防治效果,可节省农药30%以上;48%噻虫啉悬浮剂4 000倍液和2%噻虫啉微胶囊悬浮剂2 000倍液可作为静电喷雾防治马尾松毛虫3～4龄幼虫和蜀柏毒蛾4～5龄幼虫的适宜药液浓度。展开更多
Fenitrithion was sprayed with high pressure sprayer in pine forest where Bursaphelenchus xylophilus (PWN) occurred in middle May and middle June respectively. The results showed that the adults of Monochamus alternatu...Fenitrithion was sprayed with high pressure sprayer in pine forest where Bursaphelenchus xylophilus (PWN) occurred in middle May and middle June respectively. The results showed that the adults of Monochamus alternatus (JPS) were killed and the pine tree mortality rate was very low. There was no dead tree in sprayed Pinus massoniana forest in 4 years but 6% dead rate in the CK forest in Fuyang City. The mortality rate in the sprayed Pinus nigra forest in 2 years was below 1%, but 30% in the CK forest in an island of Zhoushan City. Large number of adults of JPS reared with Pinus nigra branches which sprayed fenitrothion (200×～600×) died in 24 hours, all died in 8 days, but only 13.3% died in the CK. Applying in large area, the control effect was obvious.展开更多
文摘Fenitrithion was sprayed with high pressure sprayer in pine forest where Bursaphelenchus xylophilus (PWN) occurred in middle May and middle June respectively. The results showed that the adults of Monochamus alternatus (JPS) were killed and the pine tree mortality rate was very low. There was no dead tree in sprayed Pinus massoniana forest in 4 years but 6% dead rate in the CK forest in Fuyang City. The mortality rate in the sprayed Pinus nigra forest in 2 years was below 1%, but 30% in the CK forest in an island of Zhoushan City. Large number of adults of JPS reared with Pinus nigra branches which sprayed fenitrothion (200×～600×) died in 24 hours, all died in 8 days, but only 13.3% died in the CK. Applying in large area, the control effect was obvious.
