番茄尖孢镰刀菌诱导棉花抗枯萎病的效果——诱导棉花抗黄、枯萎病研究之三

STUDIES ON INDUCED RESISTANCE OF COTTON TO FUSARIUM WILT CAUSED BY FUSARIUM OXYSPORUM

非致病的番茄尖孢镰刀菌[Fusarium oxysporum f.sp.lycopersici(Sacc.)Snyder e Hansen]菌系F86—15经培养制成诱导菌菌剂,播种时用于浸种和沟施,可有效控制棉花枯萎病。在重病地区.经两年多点试验,其防效与多菌灵相当,比对照增产19.6%和20.3%。机理测试表明,诱导菌与挑战菌同时接种时,前者的接种量为后者的10倍,效果才明显。

Cultured spores of nonpathogenic Fusarium oxysporum 86—15 were spread into soil togather with cotton seeds.It resulted in preventing and control of Fusarium wilt of cotton plants.The effects was well—matched with that of carbendazim by increasing yield of unginned cotton19.6～20.3%.Spores of F86—15 were 10 times as effective as the control.