生防菌BRF-1和BRF-2对大豆根腐病和产量的影响  

Effect of BRF-1 and BRF-2 on Root Rot and Seed Yield in Soybean

作　　者：周克琴[1] 韩秉进[1] 张秋英[1] 刘文志[2] 宫学凯 李艳华[1] 孟英[4] 王光华[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所黑土区农业生态院重点实验室,黑龙江哈尔滨150081 [2]黑龙江农垦科学院,黑龙江佳木斯154007 [3]沈阳军区龙镇农副业基地,黑龙江五大连池164135 [4]黑龙江省农业科学院耕作栽培研究所,黑龙江哈尔滨150086

出　　处：《大豆科学》2012年第5期801-803,共3页Soybean Science

基　　金：中国科学院知识创新工程重要方向项目(KSCX2-YW-N-078);国家科技支撑计划项目(2009BADB3B06);中国科学院东北地理与农业生态研究所青年博士研究基金项目(KZCX3-SW-NA3-28)

摘　　要：BRF-1和BRF-2是中国科学院东北地理与农业生态农田分子生态学科组从大豆根际土壤筛选得到的2株革兰氏阳性生防细菌,为了检测它们对田间大豆根腐病的防治效果,2010年在沈阳军区龙镇农副业基地对BRF-1和BRF-2进行田间试验。结果表明:2株生防细菌均有效地抑制了大豆根腐病的发生,发病程度分别降低44.4%和8.8%,BRF-1菌株效果较好,在降低大豆根腐病病情指数的同时,能增加大豆植株花期、始粒期地上部和地下部干物重,提高大豆产量5.9%,是一株很有潜力的生防菌。BRF-1（Paenibacillus Polymyxa）and BRF-2（Bacillus subtilis）are gram-positive bacteria obtained from soybean root rhizosphere.Dual-culture tests showed they had strong antagonism to many fungal pathogens,while they inhibited the development of plant diseases in vitro experiment.In 2010,a field trial with BRF-1 and BRF-2 was carried out in northern region of Heilongjiang Province to investigate their field performance in reducing disease incidence of soybean.Both BRF-1 and BRF-2 inhibited soybean root rot with a reduction in disease severity index by 44.4% and 8.8%,respectively.BRF-1 was a potential plant growth promoting bacteria in controlling soybean root rot,which increased above-ground dry matter and root dry matter accumulation at flowering and initial seed-filling stages,and thus enhanced seed yield by 5.9%.

关 键 词：生防菌 根腐病 生育 大豆产量 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]