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中国农学通报 ›› 2005, Vol. 21 ›› Issue (4): 194-194.

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Effects of Coupling Water with N Fertilizers on Spatio-temporal Distributing of Soil Moisture and Water Using Efficiency in Tobacco Fields

任 亚,汪耀富,刘占卿,李志敏   

  • 出版日期:2005-04-05 发布日期:2005-04-05

Effects of Coupling Water with N Fertilizers on Spatio-temporal Distributing of Soil Moisture and Water Using Efficiency in Tobacco Fields

Ren Ya, Wang Yaofu, Liu Zhanqing, Li Zhmin   

  • Online:2005-04-05 Published:2005-04-05

摘要: 采用两因素裂区试验设计,研究了水氮耦合对烟田土壤水分动态变化的影响。结果表明,在灌水量一定的条件下随氮肥用量增加,烟田土壤含水量、土壤贮水量和水分产值率增大,当氮用量达到67.5kg/hm2时开始下降;灌水与氮用量之间存在显著的互作效应,灌水量在225~450m3/hm2范围内,施氮22.5~45.0kg/hm2既可满足烤烟生长的需要又可增强其对土壤水分的利用。

Abstract: The interaction effects of water and nitrogen on soil water distribution and water use efficiency of tobacco fields were studied by splitting plot design experiment. The results showed that with the increase of nitrogen within the range of nitrogen 0~45.0k