我国西北干旱地区森林土壤中苏云金芽孢杆菌生态分布  

The Ecological Distribution of Bacillus thuringiensis of the Northwest Arid Region in China

作　　者：王学聘[1] 戴莲韵[2] 杨光滢[1] 张万儒[1] 

机构地区：[1]中国林业科学研究院林业研究所,北京100091 [2]中国林业科学研究院森林生态环境与保护研究所,北京100091

出　　处：《林业科学研究》1999年第5期467-473,共7页Forest Research

基　　金：国家自然科学基金

摘　　要：对地处我国西北干旱地区新疆、甘肃、宁夏三省（区）内的１１ 个自然保护区——哈纳斯、小叶白蜡、天山云杉、野核桃、塔里木、东大山、贺兰山、六盘山、崆洞山、兴隆山、莲花山等自然保护区采集的２６０ 个森林土壤样品，进行了生态因子调查；分析了土壤ｐＨ、含水量、水解Ｎ、有效Ｐ、速效Ｋ、全Ｎ、有机质；研究了芽孢杆菌、苏云金芽孢杆菌数量和种类生态分布。共分离苏云金芽孢杆菌４２株，其出土率和分离率分别为１１．５３％ 和２．１８％ 。The 260 forest soil samples were collected from 11 natural reserves of the northwest arid region in China. The soil pH,moisture content,hydrotytic N,efficient P,availabe K, total N, and organic matter of the soils were determined. The ecological factor of 11 natural reserves were also investigated. The number and distribution of both Bacillus and Bacillus thuringiensis were surveyed.The 42 strains of B.thuringensis were isolated from the soil samples.The ratio of the number of the soil samples containing B.thuringensis to number of total soil samples tested is 11.53%. The ratio of the number of B.thuringensis isolated to the number of sporoforming Bacillus examed is 2.18%.

关 键 词：森林土壤 苏云金芽孢杆菌 西北干旱地区 

分 类 号：S714.3[农业科学—林学]