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小麦根际联合固氮菌剂是河北省科学院经多年的试验研究,筛选出的菌种。这种固氮菌剂的特点是能与小麦根系密切结合共生,固定大气中分子态氮并转化为结合态氮(NH_3),直接为小麦提供氮素营养,并能将土壤中的无效磷、钾元素,转化为有效的磷、钾元素,改善小麦磷、钾营养水平,促进小麦的生长发育,从而提高小麦的产量。1987—1988年全国105个地、市257个县615个基层点的示范结果证明,平均每亩增产小麦34.2公斤,增产13.6％。到1989年已在全国17个省市区推广3500万亩。鉴于该项技术为小麦增产开辟了一条新途径,兵团便于
The rhizosphere combined nitrogen-fixing bacteria agent is a kind of strain screened by Hebei Academy of Sciences for many years. This kind of azotobacter is characterized by closely combining with the wheat root system, fixing the molecular nitrogen in the atmosphere and converting it into bound nitrogen (NH_3), providing nitrogen nutrition directly to the wheat, and can effectively replace the available phosphorus and potassium in the soil Elements, into effective phosphorus and potassium, improve wheat phosphorus and potassium nutrition levels, promote wheat growth and development, thereby increasing wheat yield. The demonstration results of 615 grassroots units in 105 counties and 257 counties in 1987-1988 demonstrated that the average yield of wheat per mu was 34.2 kg and the yield was increased by 13.6%. By 1989, 35 million mu of land had been popularized in 17 provinces and cities nationwide. In view of the technology for wheat production has opened up a new way, the Corps to facilitate