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通过田间试验研究了氮肥分次施用对冬小麦产量和氮肥利用率的影响,结果表明,总施氮量为240kg/hm2时,基肥、返青期和拔节期各施1/3能较氮肥全部基施、基肥和返青期各施1/2和基肥、返青、拔节期孕穗期各施1/4处理获得较高的产量、氮素回收率、农学效率和经济纯收益,是冬小麦高产高效较为适宜的氮肥施用方式。
The field experiment was conducted to study the effect of nitrogen fertilizer application on winter wheat yield and nitrogen use efficiency. The results showed that basal fertilizer application rate of 240 kg / hm2 was higher than that of basal application rate , Basal and rejuvenation each give 1/2 and base fertilizer, rejuvenation, jointing booting treatments of each 1/4 treatment to obtain higher yield, nitrogen recovery, agronomic efficiency and economic net income, it is more suitable for high yield and high efficiency of winter wheat Nitrogen fertilizer application.