摘要
B29菌株是自黄瓜根围土壤中分离到的一株拮抗枯草芽孢杆菌菌株,一年两季4点田间小区试验表明:B29菌株100、250、500倍稀释菌液对黄瓜枯萎病的防效分别为70.3%～88.2%、62.3%～85.9%和54.7%～80.6%;经两年田间大区示范,B29菌株对黄瓜枯萎病防效达84.9%,增产12.57%;同时测定了枯草芽孢杆菌菌剂对大鼠急性经口、经皮毒性,LD50均大于5 000 mg·kg-1;对主要作物的安全性测定结果表明,B29菌株对黄瓜、番茄、菜豆、籽用南瓜4种主要蔬菜作物种子的出苗和幼苗生长发育没有不良影响。
Bacillus subtilis strain B29, against Fusarium oxysporum f. sp. Cucumerinum, was isolated from cucumber rhizosphere. After twice of 4-field-plots experiments, the control efficiencies of 100, 250, and 500 dilution times to cucumber Fusarium wilt were 70. 3 % - 88.2 % , 62.3 % - 85.9 % , and 54.7 % - 80.6 % , respectively. The average efficiency of field trials with B29 was 84.9 % during 2 years and the yield of cucumber increased 12.57 %. The acute toxicity of Bacillus subtilis strain B29 to big mouse through its mouth and skin was examined, and the LD50 was beyond 5 000 mg·kg^-1 The strain B29 to the seedling rate, growth and development with 4 major crops （cucumber, tomato, bean, and seed pumpkin） was safe.
出处
《中国蔬菜》
北大核心
2009年第2期30-33,共4页
China Vegetables
基金
国家农业科技成果转化资金项目(05EFN212300089)
