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以小麦品种郑麦9023为材料,研究氮肥后移对小麦子粒产量、收获指数及氮肥偏生产力的影响。结果表明,施氮处理对小麦干物质积累量影响显著,其中底追比例为3∶7、拔节期追肥处理的干物质积累量较大。底追比例为7∶3,追肥时期由起
The wheat variety Zhengmai 9023 was used as material to study the effects of N application on grain yield, harvest index and partial yield of nitrogen fertilizers. The results showed that nitrogen application had a significant effect on the dry matter accumulation of wheat, in which the ratio of bottom-trapping was 3: 7, and the dry matter accumulation at the jointing stage was higher. Chase than the ratio of 7: 3, top dressing from the beginning