| 无压灌溉日光温室番茄作物-皿系数研究 |
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| 引用本文： | 赵伟霞,蔡焕杰,单志杰,陈新明,王健. 无压灌溉日光温室番茄作物-皿系数研究[J]. 干旱地区农业研究, 2009, 27(4): 16-21 |
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| 作者姓名： | 赵伟霞 蔡焕杰 单志杰 陈新明 王健 |
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| 作者单位： | 西北农林科技大学旱区农业水土工程教育部重点实验室,陕西,杨凌,712100;中国科学院水土保持研究所,陕西,杨凌,712100 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 以-25 kPa作为土壤水势临界值,将作物-皿系数(Kcp)设为0.2,0.4,0.6,0.8,1.0,1.2六个处理, 研究了不同灌溉水量时的番茄产量、品质和灌溉水利用效率.通过经济效益评价,研究了杨凌地区无压灌溉温室番茄获得最高经济效益时的作物-皿系数.通过张力计读数变化规律,研究了利用张力计测量无压灌溉湿润体内土壤水势的特点.研究结果表明,Kcp为0.2～0.8时, 灌溉水量的增加对番茄产量影响不大;Kcp为1.0～1.2时,灌溉水量的增加能显著提高番茄产量和果实大小;Kcp为0.2时的灌溉水量能极显著提高番茄的灌溉水利用效率.在综合考虑了杨凌地区水价、番茄使用目的和市场价格波动规律后,Kcp取值1.2能获得最高的经济效益.作物-皿系数法计算灌溉水量时的滞后性特点和张力计埋设位置,是判断利用张力计监测土壤水势临界值方法有效性的两个重要因素.
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| 关 键 词： | 无压灌溉 作物-皿系数 产量 品质 灌溉水利用效率 |
Study on crop-pan coefficient of greenhouse tomato under non-pressure irrigation |
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| ZHAO Weixi,CAI Huanjie,SHAN ZhiJie,CHEN Xinming,WANG Jian. Study on crop-pan coefficient of greenhouse tomato under non-pressure irrigation[J]. Agricultural Research in the Arid Areas, 2009, 27(4): 16-21 |
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| Authors: | ZHAO Weixi CAI Huanjie SHAN ZhiJie CHEN Xinming WANG Jian |
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| Affiliation: | ZHAO Wei-xia1,CAI Huan-jie1,SHAN Zhi-Jie2,CHEN Xin-ming1,WANG Jian1(1.Key Laboratory of Agricultural Soil & Water Engineering,Northwest A & F University,Yangling,Shaanxi 712100,China,2.Institute of Soil and Water Conservation,CAS,China) |
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| Abstract: | Crop-pan coefficientis the ratio between crop water consumption and pan evaporation.Using-25 kPa as the soil water potential threshold,and designing six treatments for crop-pan coefficient Kcp=0.2,0.4,0.6,0.8,1.0,1.2,study was made on tomato yield,quality and irrigation water use efficiency under different irrigation water amount.The crop-pan coefficient which acquired highest economic effectiveness was studied through the economic effectiveness analysis,while the measurement character of soil water potenti... |
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| Keywords: | non-pressure irrigation crop-pan coefficient yield quality irrigation wate r use efficiency |
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