【作者】 张效朴； 詹其厚； 李伟波；

【Author】 Zhang Xiao-pu Zhan Qi-hou Li Wei-bo(Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 )

【机构】 中国科学院南京土壤研究所；

【摘要】 通过两年的田间试验,研究了吉林黑土上化肥对春玉米的增产效应及肥料利用率。结果表明,在科学的施肥方法配合下,适宜的N肥用量在N 270～300 kg hm-2左右, 最佳产量在11 550—12 750 kg hm-2左右;同时可使N肥利用率提高到50%左右。更多还原

【Abstract】 Summary Through two years’ field experiments, the effect of amount of N fertilizer applied on the increase of maize production and recovery rate of fertilizer N was studied. The results indicated that, in cooperation with scientific method of applying fertilizer, the suitable amount of N applied would be 270~300 kg hm-2, and optimum grain yield of maize 11 550-12 750 kg hm-2. Meanwhile, the N recovery in plant could be raised up to 50%.更多还原