土壤里面是一个极其复杂的社会,居住着各种各样的大小生物,再加上植物根系活动和人为的耕耙施肥操作,使他们之间的关系更为复杂了。这些大小生物以细菌的数量最多,影响最大,每一克土壤中约有上亿个细菌。由於他们的活动:生长,兴衰,产生特殊物质(酶)等等,把养分溢漫到周围环境,根系吸收了,同时根系也营养着周围的细菌。当然,不是所 Inside the soil is an extremely complex society inhabited by a wide range of organisms, together with plant root activities and artificial cropping and fertilization practices, complicating the relationship between them. These organisms have the largest number of bacteria, most affected, with about 100 million bacteria in each gram of soil. Because of their activities: growth, rise and fall, produce special substances (enzymes) and so on, the overflow overflow nutrients to the surrounding environment, the root absorbed, while the root system also nourishes the surrounding bacteria. Of course, not