生物固氮肥是一种用泥土吸附固氮菌发酵液制成的固态微生物肥料,同传统合成肥相比,有如下优点: 1.肥效多元性。每克生物固氮肥中含有效固氮菌3亿个,这些固氮菌能将空气中的氮元素固定在土壤中,分解土壤中无效的磷、钾元素并能产生作物所需的其它微量元素,为农作物提供充足的氮、磷、钾及其它微量元素,具有多元功能。 2.增产效果显著。在减少50％尿素和化学农药的情况 Biological nitrogen fixation is a solid microbial fertilizer made of nitrogen-fixing bacteria fermentation broth, compared with the traditional synthetic fertilizer, has the following advantages: 1. Fertility multiplicity. Each gram of biological nitrogenous fertilizer contains 300 million diazotrophs, these nitrogen-fixing bacteria can fix the nitrogen element in the air in the soil, decompose the ineffective phosphorus and potassium elements in the soil, and can produce other trace elements needed by crops. Crops provide sufficient nitrogen, phosphorus, potassium and other trace elements, with multiple functions. 2. Significant increase yield. In the case of reducing 50% urea and chemical pesticides