几种土壤处理剂防治栝楼根结线虫病的效果

目的]为防治栝楼根结线虫提供方法支持。方法]分别以98%棉隆微粒剂3、5%威百亩水剂、根肥得、甲壳胺0、.5%阿维菌素乳油为供试药剂,在肥城市王瓜店镇进行了防治栝楼根结线虫试验。结果]用98%棉隆微粒剂203、04、0 g/m2处理后,栝楼病株率分别下降27.34%4、8.00%、53.34%,其防治效果分别达57.38%7、2.73%7、4.24%。用35%威百亩水剂69、1、2 g/m2处理后,栝楼病株率分别下降25.33%4、0.00%3、7.00%,其防治效果分别达50.50%6、7.33%、68.89%。甲壳胺和根肥得的使用剂量不变的条件下,加入4.56、.07、.5 g/m2阿维菌素,栝楼病株率分别下降28.00%4、1.34%、44.00%,其防治效果分别达53.91%、69.53%、71.09%。结论]使用98%棉隆微粒剂和35%威百亩水剂防治栝楼根结线虫的适宜剂量分别高于30、9 g/m2。在甲壳胺和根肥得的辅助下,使用0.5%阿维菌素乳油防治栝楼根结线虫的适宜剂量在6.0 g/m2以上。

Preliminary Studies on the Control Effects of Several Soil-applied Pesticides on Meloidogyne incognita of Trichosanthes kiriiowii

Objective] The purpose of the studies was to provide method support for controlling Meloidogyne incognita of Trichosanthes kirilowii.Method] With 98% mylone fine granule,35% metham aqua,root feed Ⅱ,chitosan and 0.5% avermectin oil as tested pesticides,the control experiment on M.incognita of T.kirilowii was carried out in Wangguadian town of Feicheng City.Result] After the T.kirilowii was treated with 20,30 and 40 g/m2 98% mylone fine granule,its diseased plant ratios were decreased by 27.34%,48.00% and 53.34% resp.and the control effects of 98% mylone fine granule were up to 57.38%,72.73% and 74.24% resp.After the T.kirilowii was treated with 6,9 and 12 g/m2 35% metham aqua,its diseased plant ratios were decreased by 25.33%,40.00% and 37.00% resp.and the control effects of 98% mylone fine granule were up to 50.50%,67.33% and 68.89% resp.When the application amounts of chitosan and root feed Ⅱ were invariable,when the supplementary application amounts of avermectin were 4.5,6.0 and 7.5 g/m2,the diseased plant ratios of T.kirilowii were decreased by 28.00%,41.34% and 44.00% resp.and the control effects of these methods were up to 53.91%,69.53% and 71.09%.Conclusion] The suitable application amounts of 98% mylone fine granule and 35% metham aqua for controlling M.incognita of T.kirilowii were higher than 30 and 9 g/m2 resp.While chitosan and root feed Ⅱ were applied,the suitable supplementary application amount of 0.5% avermectin oil for controlling M.incognita of T.kirilowii was higher than 6.0 g/m2.