论文部分内容阅读
目前化学氮肥的利用率很低,国外报道为50％左右,而我国试验结果,作物对不同氮肥的利用率只有25—45％。如何提高氮肥利用率,减少氮素损失已成为当前肥料工作中的重要课题。除注意改进氮肥的施用方法外,世界各国正积极研究采用化学的方法(在氮肥中添加硝化抑制剂)以减少氮素损失。近年来我国各地也开始研究氮肥增效剂问题。我省从1972年开始,在省的化肥试验网中进行了此项工作,着重研究了专用氮肥增效
At present, the utilization rate of chemical nitrogen fertilizer is very low, about 50% of that reported in foreign countries. However, the test results of our country use only 25-45% of crops for different nitrogenous fertilizers. How to improve the utilization rate of nitrogen fertilizer and reduce the nitrogen loss has become an important issue in the current fertilizer work. In addition to improving the application of nitrogen fertilizers, countries around the world are actively studying the use of chemical methods (adding nitrification inhibitors to nitrogenous fertilizers) to reduce nitrogen losses. In recent years, various parts of our country have also started to study nitrogenous fertilizer synergist. Since 1972, our province has carried out this work in the provincial fertilizer experiment network, focusing on the efficiency of special nitrogen fertilizer