水资源与水工程学报

文章摘要

JIANG Shufang,WAN Shuqin,KANG Yuehu,Pei Liang,Liu Shiping,Qu Qiang.华北地区滴灌控制基质势对生菜产量和水分利用的影响Journal of Water Resources and Water Engineering[J].,2011,22(6):

华北地区滴灌控制基质势对生菜产量和水分利用的影响

Effects of soil potential on lettuce growth and water use efficiency under drip irrigation in semi-humid regions of north China

DOI：10.11705/j.issn.1672-643X.2011.06.234

中文关键词: 滴灌基质势结球生菜生菜产量水分利用

英文关键词: drip irrigation soil matrix potential lettuce yield of lettuce water use efficiency

基金项目:国家自然科学基金资助(青年科学基金项目:51009126); 中国科学院知识创新工程重要方向项目(KZCX2-YW-359); 宁夏农业综合开发土地治理科技推广项目(NTKJ-11-02)

Author Name	Affiliation
JIANG Shufang,WAN Shuqin,KANG Yuehu,Pei Liang,Liu Shiping,Qu Qiang	JIANG Shufang1,WAN Shuqin1,KANG Yuehu1,Pei Liang1,Liu Shiping1,Qu Qiang2(1.Key Laboratory of Water Cycle and Related Land Surface Processes,Institute of Geographical Sciences and Natural Resource Research,Chinese Academy of Sciences,Beijing 100101,China,2.China Irrigation & Drainage Development Center,Beijing 100054,China)

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中文摘要:

利用三年试验资料研究了华北地区滴灌条件下,不同基质势处理(-10 kPa,-20 kPa,-30 kPa,-40 kPa,-50 kPa)对结球生菜产量、水分利用效率(WUE)及灌溉水利用效率(IWUE)等的影响。结果表明:随着滴头正下方0.2 m深度处土壤基质势控制的降低,整个生育期结球生菜的灌溉水量、累计耗水量明显减少,而水分利用效率和灌溉水利用效率随着土壤基质势控制的降低明显升高,但不同处理生菜总产量无显著差异。三年监测数据表明,受生长期降雨影响,大部分时间土壤基质势实际都维持在-30 kPa以上。因此,露地滴灌种植生菜,缓苗后,可通过控制滴头正下方0.2 m深度处土壤基质势下限高于-30 kPa来指导灌溉。

英文摘要:

Three years experiments were carried out to investigate the effects of different soil matric potential(from-10 to-50 kPa) on the lettuce growth and water use efficiency under drip irrigation condition in North China.The results showed that with the soil matric potential decresesed at 0.2 m depth immediately under drip emitters the irrigation amount and the accumulative consumed water in whole growing were obviously reduced,but the irrigation water use efficiency obviously increased and didn't affect the tot...

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