【摘要】 细菌是土壤微生物中数量最大的一个类群,研究结果表明,土壤中细菌的数量同土壤的水肥气热等因素有直接关系。经对湟水流域不同土壤类型及不同生态条件下的土壤细菌分离培养,细菌的数量、分布特点与其所处的土壤类型、土壤肥力、海拔高度以及种植利用方式、作物种类等均有直接的相关性。更多还原

【Abstract】 The germs is a biggest colony in soil microorganism.Studying result showed,soil germs contain was direct related with soil’s water,fertilizer,air and temperature etc.Soil germs were separated and culutured by different oil type of Huangshui valley and different ecologic environment.Quantity and distributional characters of soil grms were direct with its soil type,fertilizer,altitude,patterms of planting and exploitation,crop kings etc.更多还原