嗜酸柏拉红菌PSB-01菌株对苎麻根腐线虫病的防治效果  

Biocontrol of Ramie Root-rot Nematodes by Rhodoblastus acidophilus

作　　者：成飞雪[1,2] 何明远 张战泓[3] 戴建平 张德咏[2,4] 肖启明[1] 刘勇[2,4] 

机构地区：[1]湖南农业大学生物安全科学技术学院,长沙410128 [2]湖南省植物保护研究所 [3]湖南省蔬菜研究所 [4]中南大学研究生院隆平分院

出　　处：《中国生物防治》2008年第4期359-362,共4页Chinese Journal of Biological Control

基　　金：国家863计划项目(2006AA10Z401);国家十一五科技支撑计划项目(2006BAD17B08，2006BAD08A08);行业科技专项(nyhyz07-050)

摘　　要：于污水中分离的嗜酸柏拉红菌(Rhodoblastus acidophilus)在应用中发现对苎麻根腐线虫(咖啡短体线虫Pratylenchus coffeae和穿刺短体线虫P.penetrans)病有很好的防治效果。室内毒力测定表明:嗜酸柏拉红菌PSB-01发酵原液对咖啡短体线虫具有很强的毒杀作用,24h后死亡率达100%。发病麻园施用100倍PSB-01发酵液,60d后苎麻根内及根际周围土壤中的线虫减退率分别为93.8%和90.9%。田间试验表明,PSB-01菌剂不仅能有效防治苎麻根腐线虫病,对苎麻还有较大的增产效应,增产率达23.3%,明显优于对照药剂呋喃丹。The bacteria of Rhodoblastus acidophilus PSB-01 showed the high effectiveness in control of ramie root-rot nematodes. These nematodes belonged to Protylenchus coffeae and P. penetrans. The results from indoor infectivity tests demonstrated that 100% mortality of P. penetrans after 24 h. Treated with the undiluted bacteria fermentation liquid. The P. coffeae and P. penetrans population reduced rates reached to 93.8%, 90.9% respectively after 60 d treatment with 100 time diluted fermentation liquid of the bacteria PSB-01 in the field trail. A 23.3 % higher ramie yield was achieved in the bacteria treated field as well. The control effectiveness was remarkable high in the bacteria treatment than in the carbofuran chemical treatment.

关 键 词：苎麻 根腐线虫病 嗜酸柏拉红菌 生防菌剂 

分 类 号：S435.63[农业科学—农业昆虫与害虫防治] S476[农业科学—植物保护]