第一，用鉬肥拌種。常用的鉬肥是鉬酸銨。拌種時，每公斤豆種隻用2克鉬酸銨。首先將鉬酸銨溶解於5倍熱水中，充分攪拌、冷卻後拌種。第二

，花期前後葉麵噴施鉬肥。噴施濃度為0.005%～0.01%demusuananrongye。yemianpenfeiyibanyaopensaliangciyishang。disan，youyuquemuzhengzhuangduofashengzaisuanxingturangshang
，ketongguoshiyongshiliangshihuijiangditurangsuandu
，tigaomudeyouxiaoxing。yinggaizhuyideshi，shimuzhuyaocaiyonggenwaishifeifa
，yibanbuyongtushifa，mudeshikongzhiyongliang。yinci

，ruguocaiyongtushifa，meimu200kemufei
，yaoyuyoujifeichongfenhunyunhouzaishi，buyaozaitongyikuaitianliliannianshiyong。disi，zaigeidadoushimufeiqian
，xianyaonongqingchuturangshifouquelin，ruguoquelinyaobuchonglinfei，fouzedanshimufeifanershigenliujianshao。

    大豆的根瘤狀況還與氮肥的使用有關。如果施用過多的化學氮肥
，也會抑製根瘤固氮，也同樣表現出大豆的根瘤數目減少、瘤小和固氮率降低。

    chuciyiwai，linduidadougenliushengchangfayuhegudandezuoyonghenzhongyao，linbujincujingenxishengchang，erqieyouliyugenliudefayuhetigaogenliudegudannengli。suoyizaidoukezuowushang，yaozhongshishiyonglinfei，tongguoshilinfeicujingudan
，keyidadao"以磷增氮"的效果。