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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (11): 211-211.

所属专题： 小麦

• 目次 • 上一篇    下一篇

基于养分平衡和土壤测试的冬小麦氮素优化管理方法研究

赵荣芳,陈新平,张福锁   

  • 出版日期:2005-11-05 发布日期:2005-11-05

Study on Nitrogen Optimized Management at Different Growing Stage of Winter Wheat Based on Nutrient Balance and Soil Test

Zhao Rongfang, Chen Xinping, Zhang Fusuo   

  • Online:2005-11-05 Published:2005-11-05

摘要： 以养分平衡和土壤测试为基础，把氮素供应与作物氮肥特性结合起来，通过田间试验研究冬小麦分期优化供氮量。结果表明：冬小麦播种前0~30cm土壤Nmin大于30 kg/hm2时，不施基肥（氮），足以满足冬小麦从播种到返青期对氮素的需求；返青期保证供氮量90 kg/hm2 (0~60 cm土壤Nmin+肥料氮)，可以满足冬小麦从返青期到拔节期对氮素的需求；拔节期保证供氮量100 kg/hm2 (0~90 cm土壤Nmin+肥料氮)，可以满足冬小麦从拔节期到收获期对氮素的需求，最终达到目标产量。上述返青期90 kg/

Abstract: Based on nutrient balance and soil testing, the field experiment was conducted to study optimized nitrogen supply at different growing stage of winter wheat. The main results were as follows: When soil Nmin of 0~30 cm was higher than 30 kg/hm2 before sowi