摘要
选用日曹-甲基托布津70％可湿性粉剂、百菌清50％悬浮剂、云大翠丽5％己唑醇微乳剂和粉锈宁15％可湿性粉剂等4种高效低毒的农药对麻疯树白粉病进行大田药效试验，结果表明：4种药剂对麻疯树白粉病均具有显著的防治效果，其中以日曹-甲基托布津70％可湿性粉剂稀释800倍液的防治效果最好，3次施药后防治效果达88．89％，对麻疯树白粉病的防治效果显著且稳定，优于其他药剂；喷洒次数的增加可明显提高低浓度杀菌剂的防治效果，因此生产上应尽量使用低浓度药剂连续喷洒2～3次，可延缓麻疯树白粉病抗药性的产生。
Four highly effective and lowly toxic fungicides （including 70% of methyl topsin wettable powder ,50% of daconil suspending agent ,5% of hexaconazole microemulsion and 15% of triadimefon wettable powder）were used in plot trials and the results show that all of them are effective to the control of powdery mildew and among them ,the best effective fungicides is 70% of methyl topsin with 800 times of water and the controlling effect reaches 88 .89%after spraying 3 times ,which had remarkable and lasting effect ,and the control effect was superior to others .The controlling effect of tow concentration chemicals can be strengthened obviously by increasing spraying times ,there-fore ,it is suggested that low concentration chemicals should be sprayed continuuously 2 - 3 times ,which can delay the resistance of powdery mildew to fungicides .
出处
《防护林科技》
2014年第9期26-27,43,共3页
Protection Forest Science and Technology
关键词
麻疯树
白粉病
防治效果
Jatropha curcas
powdery mildew
control effect
