促生固氮菌肥料是一种新型的复合菌肥。它是由几种能够促进植物生长的抗生菌和固氮效率较高的固氮菌(Azotobacter)组合而成的。这种菌肥的特点是,不仅具有“一肥多用”的性能,而且由于菌肥中微生物之间的有利关系而可以提高它的有效性。据初步试验证明,它既有刺激植物生长,又有固氮和加速土壤氮,磷养料有效化的作用,从而可以为提高作物产量提供良好条件。现将本阶段获得的初步试验结果简报如下: 一、菌种的筛选和组合 (一)通过“高氏一号”培养基从湖北各地土壤样本中分离的放线菌,用豆芽弯曲法、盆 Azotobacter promoting nitrogen fertilizer is a new type of compound fertilizer. It consists of several combinations of antibiotics that promote plant growth and Azotobacter, which is more efficient at nitrogen fixation. This bacterium fertilizer is characterized not only by the “fat and fat” properties, but also by its beneficial effect on the microorganisms in the bacteriostat. According to preliminary tests, it not only stimulates the growth of plants, but also has the effect of nitrogen fixation and the acceleration of nitrogen and phosphorus nutrients in soil so as to provide good conditions for increasing crop yield. The preliminary results of this stage are now briefed as follows: First, the screening and combination of strains (A) through the “Gao” No. 1 soil samples from all over Hubei actinomycetes isolated, with bean curd bending method, the basin