云南烟草根结线虫病发生及防治研究

烟草根结线虫病（Ｍｅｌｏｉｄｏｇｙｎｅｓｐｐ）是云南旱地烤烟的主要病害，全省发病面积４０余万亩，发病烟田减产３０％～４５％。省地两级组成研究组于１９９０～１９９３年开展研究，获得病原线虫发生三代，南方根结线虫为优势种群，少孢节丛孢菌能捕食病原线虫。亩施１０％克线磷３ｋ７防效５１％；１５％铁灭克７００７防效５８．７％；５％涕灭威２１００ｇ防效与铁灭克相近。实施深耕施肥用药等综合防治，田间防效达７６·１７％。

Study on Incidence and Control of Tobacco Root knot Nematode Disease in Yunnan

Tobacco root-knot nematode disease is an important diseaes of tobacco on the dry land in Yunnan. The disease occurred in an area of 400 thusand mu land where the yield of tobacco Was decreased by 30-45%. The research was carried out in 1990-1993. It was shown that three generations of pathogenic nematodes occurred,and south root-knot nematodes were the dominant population. Arthrobotrys Dligospora Fres could f.ed on pathogenic nematodes. Applying 3 kg of 10% fenamiphos or 700g of 15% Temik per inn,the control effect reached 51% and 58. 7% respectively. The effect of 2100g of 5% aldicarb was similar to that of Temik. when integrated measeeres such as deep ploughing and applying fertilizers and pesticides were taken the control was 76. 17%.