湖南省几种稻田土壤微生物区系的研究

对湖南省3个国家水稻工程基地的7种水稻土微生物区系的分析结果表明,7种水稻土中3类微生物总数依次为黄沙泥>紫沙泥>河沙泥>紫泥田>红黄泥>潮沙泥>黄泥田,特殊生理群的微生物数量也以河沙泥和紫沙泥等通气性好、质地好的土壤中最多,而黄泥田和红黄泥等紧实土壤中微生物数量较少。农业生产中要因土壤类型采取相应的农业技术措施。

Studies on microflora in several types of paddy soils in Hunan Province

The microflora of seven types of paddy soils in three bases of national rice engineering, Liling Municipality, Changsha Municipality and Xiangyin Municipality,east-southern Hunan Province,was investigated.The results show that the total amount of microorganisms in the tested soils is related to the soil fertility. The amount order of microbes in seven paddy soils is as the followings:yellow sandy earth>purple sandy earth>alluvial sandy earth>purple clayey earth>red-dish yellow clayey earth>chao sandy earth>yellow clayey earth. And the amount of several special physiological groups of microbes in yellow clayey earth and reddish yellow clayey earth,whose structures are tight,is less than those in the other several types of soils, such as purple sandy earth and alluvial sandy earth. In order to develop agriculture,reasonable cropping measures should be taken according to soil type.