玉米根际联合固氮菌剂是河北省科学院近年来研制成功的新型生物制剂。该菌能与玉米根系结合,固定大气中分子态氮,除改善玉米氮素营养外,还能产生植物生长调节物质,促进玉米生长发育,并能活化土壤中的磷、钾元素,改善玉米的营养状况,从而提高玉米产量。为了探索该菌剂在新 The rhizosphere combined azotobacter is a new type of biological preparation successfully developed by Hebei Academy of Science in recent years. The bacteria can be combined with corn roots, fixed molecular nitrogen nitrogen in the atmosphere, in addition to improving nitrogen nutrition of corn, but also can produce plant growth regulators to promote the growth and development of corn, and can activate the soil of phosphorus and potassium, improve corn Nutritional status, thereby increasing corn production. In order to explore the fungicide in the new