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保氮素是吉林省通化市经济技术开发中心与通化市土肥工作站研制开发的产品。它是一种新型的氮肥缓释增效剂 ,能使氮肥的肥效期由 35～ 5 5 d延长至 90～ 1 2 0 d,可提高肥料利用率 8%～ 1 3% ,节约氮肥 30 %～ 40 %。2 0 0 1年名山农场保氮素应用面积1 0 0 hm2 ,增产玉米 5 2 t
Nitrogen security is Tonghua City, Jilin Province Economic and Technological Development Center and Tonghua City Fertilizer workstation research and development of products. It is a new type of sustained-release nitrogen fertilizer synergist, which can prolong the fertilizing period of nitrogen fertilizer from 35-55 d to 90-120 d, which can increase the fertilizer utilization rate by 8% -13% and save nitrogen fertilizer by 30% ~ 40%. In 2001, the area of Nanshan Farm, which has a nitrogen application area of 100 hm 2, increased corn yield by 5 2 t