Water Demand and Irrigation Efficiency Study on Cold-terra Rice in Different Growing Period

摘要：

By taking different extent water deficit in each period office, the characteristics and rules of water demand for rice in cold area were found; and yield of rice in different water treatments was obtained. The results showed: different moisture treatments in each period of rice had important impact on water requirement and water use efficiency. The maximum influence of drought stage upon water requirement is jointing-booting stage, the maximum influence of drought stage on rice yield is earing stage; and the water use efficiencies of rice are high with drought during the tillering and filling stages.The treatments which were suffered from drought continuously during two periods would make great impact on water requirement and yield of rice. The lower limits of soil moisture in paddy field of Chahayang has been proposed by analyzing and comparing the rice water requirement, yield and water use efficiency in different water conditions.

关键词： Rice Different Water Treatments Water Demand Yield Water Use Efficiency

作者: JI Fei FU Qiang

作者单位: Northeast Agricultural University,Harbin 150030,China

会议类型: 国际会议

会议名称: 2007 International Conference on Agriculture Engineering(2007年农业工程国际会议)

会议地点: 河北保定

会议语种:英文

页码: 3-8

在线出版日期: 2007-10-20（万方平台首次上网日期，不代表论文的发表时间）