| 引用本文: | 马瑞莎,乔长录,葛瑞晨.膜下滴灌棉田凝结水量研究[J].灌溉排水学报,0,():-. |
| Ma Rui-sha,Qiao Chang-lu,Ge Rui-chen.膜下滴灌棉田凝结水量研究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 利用石河子大学节水灌溉站2019年蒸渗仪、气象站、EM50对棉田凝结水进行测定和实验,对所得数据进行综合分析。选取不同生育期的典型日讨论了膜下滴灌棉田凝结水的全育期凝结过程、不同生育期凝结水量、不同处理方式对凝结量的影响以及凝结水对干旱区棉田的意义。结果表明：水汽从北京时间0:00以后凝结过程开始,一直到次日8:00结束,历时8小时,昼夜变换中凝结与蒸散交替进行。水汽的凝结过程可分为缓慢凝结、快速凝结、转为蒸散三个阶段。不同的生育期的凝结水日凝结速率都是在1:00-3:00达到最大,随后处于逐渐下降的变化趋势。棉田凝结水凝结过程主要发生在夜间,四个不同生育期阶段,凝结量和蒸散量均为：花铃期>蕾期>吐絮期>苗期。不覆膜条件下的凝结水量比覆膜条件下高25.86%,覆膜与不覆膜两种方式不会影响水汽凝结的动态变化规律,不覆膜条件更有利于凝结水的产生,覆膜条件不利于凝结水进入土壤。 |
| 关键词: 凝结水;膜下滴灌;干旱区;玛纳斯河流域 |
| DOI： |
| 分类号:暂无 |
| 基金项目:“膜下滴灌绿洲棉田蒸散机理与棉花需水模型研究(51769030)” |
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| Study of dew in cotton field under drip irrigation |
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Ma Rui-sha, Qiao Chang-lu, Ge Rui-chen
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School of Water Conservancy and Architectural Engineering,Shihezi University,Xinjiang
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| Abstract: |
| Using the water-saving irrigation station of Shihezi University in 2019, the lysimeter, weather station, and EM50 were used to measure and experiment on the dew of cotton fields, and comprehensively analyze then obtained data. The typical days of different growth periods were selected to discuss the condensation process of drip irrigation cotton field during the whole growth period, the amount of dew in different growth periods, the influence of different treatment methods on the dew amount, and the significance of dew on cotton fields in arid areas. The results show that the condensation process of water vapor starts after 0:00 Beijing time and ends at 8:00 the next day, which lasts for 8 hours. During the night shift, condensation and evapotranspiration alternately proceed. The condensation process of water vapor can be divided into three stages: slow condensation, rapid condensation, and conversion to evapotranspiration. The daily condensation rate of dew in different growth periods reached the maximum between 1:00-3:00, and then gradually decreased. The coagulation process of cotton field condensate water mainly occurs at night, and the condensation and evapotranspiration are all in the four different growth stages: blooming and boll stage> bud stage> fluffing stage> seedling stage. The amount of condensed water under the uncoated condition is 25.86% higher than that under the filmed condition. The two methods of film-coated and uncoated will not affect the dynamic change law of water vapor condensation. The non-coated condition is more conducive to the generation of condensation. Conditions are not conducive to dew entering the soil. |
| Key words: Dew; Drip irrigation under mulch; arid areas; Manas river basin |
