| 滴灌条件下土壤基质势与打顶措施对番茄生长和水分利用的影响 |
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| 引用本文： | 万书勤,康跃虎,刘士平.滴灌条件下土壤基质势与打顶措施对番茄生长和水分利用的影响[J].灌溉排水学报,2009,28(2). |
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| 作者姓名： | 万书勤 康跃虎 刘士平 |
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| 作者单位： | 中国科学院,地理科学与资源研究所陆地水循环及地表过程重点实验室,北京,100101
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| 基金项目： | 北京市科技计划课题，国家科技支撑计划，中国科学院百人计划项目 |
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| 摘 要： | 研究了华北半湿润地区滴灌条件下,打顶与不打顶农艺措施以及不同土壤基质势(滴头正下方0.2 m深度处土壤基质势下限控制在-10~-50 kPa)对番茄生长和水分利用效率的影响。研究发现,与打顶农艺措施相比,不打顶条件下番茄的平均株高、生育期累计灌水量和追肥量都相对较高,而产量和灌溉水利用效率却较低。二种农艺管理措施下,随着滴头正下方0.2 m深度处土壤基质势控制的降低,番茄整个生育期的灌水量、累计耗水量明显降低,而水分利用效率和灌溉水利用效率明显升高。由此可知,在我国华北半湿润地区露地栽培条件下,打顶农艺管理措施更有利于番茄的高产和水分利用效率的提高,并且滴灌条件下在番茄安全缓苗后,可以通过控制滴头正下方0.2 m深度处土壤基质势在-50 kPa以上来指导灌溉。
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| 关 键 词： | 滴灌 番茄 打顶 土壤基质势 生长 水分利用效率 |
Effects of Soil Matric Potential and Topping on Tomato Growth and Water Use Efficiency under Drip Irrigation |
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| WAN Shu-qin,KANG Yue-hu,LIU Shi-ping.Effects of Soil Matric Potential and Topping on Tomato Growth and Water Use Efficiency under Drip Irrigation[J].Journal of Irrigation and Drainage,2009,28(2). |
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| Authors: | WAN Shu-qin KANG Yue-hu LIU Shi-ping |
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| Institution: | 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 |
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| Abstract: | An experiment was carried out to investigate the effects of topping(topping and non-topping) and soil matric potential(soil matric potential at 0.2 m depth immediately under drip emitters controlled from-10 to-50 kPa.) on tomato growth and water use efficiency under drip irrigation in semi-humid areas of north China.The results indicated that compared to topping tomatoes,the plant height,seasonal irrigation amount and fertilization amount for non-topping tomatoes were relatively high,but yield and irrigatio... |
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| Keywords: | drip irrigation tomato topping soil matric potential growth water use efficiency |
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