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微咸水滴灌对黄瓜产量及灌溉水利用效率的影响

万书勤, 康跃虎, 王丹, 刘士平, 冯利平

万书勤, 康跃虎, 王丹, 刘士平, 冯利平. 微咸水滴灌对黄瓜产量及灌溉水利用效率的影响[J]. 农业工程学报, 2007, 23(3): 30-35.
引用本文: 万书勤, 康跃虎, 王丹, 刘士平, 冯利平. 微咸水滴灌对黄瓜产量及灌溉水利用效率的影响[J]. 农业工程学报, 2007, 23(3): 30-35.
Wan Shuqin, Kang Yuehu, Wang Dan, Liu Shiping, Feng Liping. Effects of saline water on cucumber yields and irrigation water use efficiency under drip irrigation[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2007, 23(3): 30-35.
Citation: Wan Shuqin, Kang Yuehu, Wang Dan, Liu Shiping, Feng Liping. Effects of saline water on cucumber yields and irrigation water use efficiency under drip irrigation[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2007, 23(3): 30-35.

微咸水滴灌对黄瓜产量及灌溉水利用效率的影响

基金项目: 中国科学院知识创新工程项目(KSCX2-YW-N-003);中国科学院百人计划;天津市科技发展计划项目(05YFGZNC01000与06YFGZNC00100)

Effects of saline water on cucumber yields and irrigation water use efficiency under drip irrigation

  • 摘要: 试验主要研究了华北半湿润地区微咸水滴灌条件下,滴头正下方0.2 m深度土壤基质势分别控制在-10~-50 kPa时,不同盐分浓度微咸水(2.2~4.9 dS/m)对黄瓜产量、灌水量及灌溉水利用效率(IWUE)的影响。研究发现当灌溉水电导率(EC)大于1.1 dS/m时,黄瓜的产量随着EC的增大而降低。当滴头下0.2 m深度土壤基质势控制在-25~-35 kPa时,黄瓜表现出来的耐盐性最强,EC每升高1 dS/m产量大约降低3%。总的趋势是土壤基质势控制越高(-10 kPa)处理的灌溉量越多,IWUE越低,而土壤基质势控制越低(-50 kPa)处理的灌溉量越少,IWUE越高。通过研究,在年降雨量大约为600 mm的半湿润地区,当没有足够的淡水用于作物灌溉时,可以在采用一系列灌溉与栽培管理措施条件下,利用2.2~4.9 dS/m的微咸水来灌溉黄瓜等对盐分中等敏感的作物。
    Abstract: The experiment was corducted to investigate mainly the effects of saline water(EC=2.2~4.9 dS/m) on cucumber yield, irrigation quantity and irrigation water use efficiency(IWUE) under drip irrigation in North China Plain, when the soil matric potential(SMP) at 0.2 m depth immediately under drip emitter was controlled from -10 to -50 kPa. The experiment results indicated when irrigation water salinity(ECi) was greater than 1.1 dS/m, cucumber yield decreased with the increasing of ECi. When the SMP at 0.2 m depth immediately under drip emitter was controlled between -25 and -35 kPa, cucumber showed the most resistant to salinity, and cucumber yield decreased about 3% for 1 dS/m increase of ECi. When the treatment with a higher SMP(-10 kPa), the irrigation quantity was more, and the IWUE was lower; whereas the treatment with a lower SMP(-50 kPa), the irrigation quantity was less, and the IWUE was higher. As can be known from this study, in the semi-humid regions with annual precipitation about 600 mm where no enough fresh water is available for irrigation, 2.2~4.9 dS/m saline water can be used by drip irrigation to irrigate crops such as cucumber, the moderate salinity susceptible crop, after several proper agronomic practices and water management strategies are taken.
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出版历程
  • 收稿日期:  2006-04-12
  • 修回日期:  2007-01-08
  • 发布日期:  2007-03-30

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