细菌、真菌和自身固氮菌数量春季最多。
As to same tea age, the population of azotobacter became smaller with the soil fertility decrease.相同茶龄的土壤中固氮菌的数量随土壤肥力的降低而减少;
The paper introduces the method of making azotobacter fertilizer by biological process and test method of bacteria.本文介绍了生物法制固氮菌肥的方法,以及菌种的检验方法。