小杆线虫(Rhabditis sp.)对温室黄瓜根际植物寄生线虫的抑制作用  

Suppression of Rhabditis sp.on plant parasitic nematodes of cucumber in greenhouse

作　　者：曹海锋[1] 刘奇志[1] 谢文闻[1] 曹静[1] 李丽 

机构地区：[1]中国农业大学昆虫系,北京100094 [2]河南省开封市通许县政府,通许475400

出　　处：《植物病理学报》2007年第2期210-213,共4页Acta Phytopathologica Sinica

基　　金：国家科技部"863"计划课题资助项目(2006AA06Z354);河南省科技攻关项目(20032005)

摘　　要：Rhabditis sp.Bn strain was the first time found suppressive on plant parasitic nematodes(PPNs)in the rhizosphere of greenhouse cucumber.The nematode Bn was applied into soil at the rate of 1.0×1010 Juveniles/hm2 10 days before cucumber plants being planted in October 2004 and then once a month as treatment.The same volume of tap water was used as control.The density of PPNs increased sharply in control and reached 1 561 Js/100 mL soil in April,whereas it was less than 400 Js/100 mL soil in treatment,significantly lower than that of control(P<0.01).The densities of PPNs,Meloidogyne spp.and Tylenchorhynchus spp.were reduced by 70% and 87% respectively by applying Rhabditis sp.Bn strain.The root-knot index of cucumber in treatment was also reduced significantly(P<0.05)in April 2005.Rhabditis sp. Bn strain was the first time found suppressive on plant parasitic nematodes （PPNs） in the rhizosphere of greenhouse cucumber. The nematode Bn was applied into soil at the rate of 1.0 × 10^10 Juveniles/hm^2 10 days before cucumber plants being planted in October 2004 and then once a month as treatment. The same volume of tap water was used as control. The density of PPNs increased sharply in control and reached 1 561 Js/100 mL soil in April, whereas it was less than 400 Js/100 mL soil in treatment, significantly lower than that of control （P 〈0.01 ）. The densities of PPNs, Meloidogyne spp. and Tylenchorhynchus spp. were reduced by 70% and 87% respectively by applying Rhabditis sp. Bn strain. The root-knot index of cucumber in treatment was also reduced significantly （ P 〈 0.05 ） in April 2005.

关 键 词：温室黄瓜 小杆线虫 植物寄生线虫 spp 抑制作用 根际 植物线虫 复种指数 

分 类 号：S642.2[农业科学—蔬菜学]