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近几年，水稻生产的化肥投入（尤其是氮肥）不断增加，但利用率却不高。为了提高水稻生产中的氮肥利用率，延长肥效期，增加水稻产量和经济效益，１９９８年我们进行“水田应用新型氮肥长效增效剂（肥隆）”效果试验。１试验材料与方法１．１试验材料试验地点：三监狱水田一大?
In recent years, the input of fertilizers for rice production (especially nitrogenous fertilizers) has been continuously increasing, but the utilization rate is not high. In order to improve the utilization of nitrogen fertilizer in rice production, extend the fertilizer efficiency and increase the yield and economic benefits of rice, we carried out the effect test of “Application of new nitrogen fertilizer long-acting synergist (fertilizers) in paddy fields” in 1998. 1 Test Materials and Methods 1.1 Test Materials Test Location: Three prisons a paddy field?