title: [Studies on the ecological distribution of Bacillus thuringiensis in forest soils of China].
abstract: A total of 384 forest soils samples at 0-5cm depth collected from 8 forest site zones (13 Natural Reserves) in China were examined for the distribution of Bacillus and Bacillus thuringiensis. The 79 cultures (4.21%) in 1873 isolates of Bacillus collected referable to the Bacillus thuringiensis. Soil pH, moisture content and soil nutrient were determined. Rules of the ecological distribution of Bacillus thuringiensis of 8 forest site zones in China were analysed. Toxicities against 6 species of insect were tested. Strain some efficient serains were obtained. It was shown that resource of Bacillus thuringiensis is much fruitful in forest soils of China.
authors.affiliation: Research Institute of Forestry, CAF, Beijing.
authors.forename: L
authors.initials: L
authors.lastname: Dai
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: G
authors.initials: G
authors.lastname: Yang
authors.forename: W
authors.initials: W
authors.lastname: Zhang
mesh_terms: D001413:Bacillus thuringiensis / Q000145:classification / Q000302:isolation & purification*; D002681:China; D003247:Conservation of Natural Resources; D004463:Ecology; D010572:Pest Control, Biological; D012988:Soil Microbiology; D014197:Trees