摘要
为解决当前昆明烟区根结线虫危害突出的问题,通过在发病区取样鉴定危害烟草的根结线虫种类,并利用保温大棚在冬季开展了8种生防制剂的筛选试验.结果表明:1)昆明烟区以南方根结线虫、花生根结线虫和爪哇根结线虫并存,占总根结线虫种类的97.5%,还存在少量北方根结线虫和未知种类线虫.2)生防制剂表现出一定的选择性,对花生根结线虫的防效以金东旺最好,对南方根结线虫的防效以阿维菌素最好,"1349"次之.3)线虫必克防效中等,针线结和木霉防效不理想,但这三者均表现为能明显促进烟株生长发育."1331"和"1342"对防治线虫和改善烟株生长方面没有作用.研究基本明确了危害昆明烟草的根结线虫种类,并初步筛选出能有效控制根结线虫的生防制剂,同时提出分区域、高效率的生防组合措施.
In order to solve the problem of root knot nematode damage in Kunming flue-cured tobacco growing regions, we sampled and identified root knot nematode species which were harmful to tobacco in the disease area, and 8 screening tests of biocontrol agents were carried out in greenhouse in winter. The result showed that ： 1） In Kunming tobacco area, meloidogyne incognita, meloidogyne arenaria and meloidogyne javanica coexist, accounting for 97. 5% of total root knot nematodes, while the remaining ones were meloidogyne hapla and unknown nematodes. 2） The biocontrol agents showed a certain selectivity. uJin Dongwang^ had the best control effect on meloido-gyne arenaria. Abamectin had the best effect on the control of meloidogyne incognita, followed by ＂ 1349＂ . 3）“Xianchongbike” showed moderate control effect on nematodes, but the control effect of ‘‘Zhenxianjie” and trichoderma was not ideal. However, all the three could significantly promote the growth and development of tobacco plants. ＂ 1331＂ and ＂ 1342＂ had no effect on controlling nematodes and promoting tobacco growth. The research basically defined the species of root knot nematodes endangering tobacco in Kunming. The biocontrol agents which could effectively control root knot nematodes were screened preliminarily and the regional and high efficiency measures for biocontrol were proposed.
出处
《昆明学院学报》
2017年第6期1-6,共6页
Journal of Kunming University
基金
中国烟草总公司云南省公司资助项目(2017YN12)
关键词
昆明
烟草根结线虫
生物制剂
评价
Kunming
tobacco root-knot nematodes
biological agents
evaluation
