|
|||||
|
|
| 海冰水盐分浓度及灌溉次数对土壤水分和棉花产量的影响 | |
| 引用本文： | 武雪萍,郑 妍,刘恩科,王小彬,赵全胜,查 燕,蔡典雄,白 洋,胡育骄.海冰水盐分浓度及灌溉次数对土壤水分和棉花产量的影响[J].农业工程学报,2010,26(8):25-32. |
| 作者姓名： | 武雪萍 郑 妍 刘恩科 王小彬 赵全胜 查 燕 蔡典雄 白 洋 胡育骄 |
| 作者单位： | 1. 农业部植物营养与养分循环重点开放实验室,中国农业科学院农业资源与农业区划研究所,北京,100081;农业部旱作节水农业重点开放实验室,北京,100081 2. 农业部植物营养与养分循环重点开放实验室,中国农业科学院农业资源与农业区划研究所,北京,100081 3. 农业部旱作节水农业重点开放实验室,北京 100081;中国农业科学院农业环境与可持续发展研究所,北京,100081 |
| 基金项目： | 国家重点基础研究发展计划973项目（2007CB109305）；国家“863”计划资助项目（2006AA100206和2006AA100220） |
| 摘 要： | 为了探讨环渤海地区海冰水灌溉技术，于2008年采用微区试验，研究了海冰水不同盐分浓度（1、3、5、7、9 g/L）和不同灌溉次数对土壤水分及棉花产量的影响。结果表明，采用海冰水灌溉能明显提高土壤水分含量，尤其以播种前灌溉和苗期灌溉效果最佳，当每次灌溉量为450 m3/hm2时,与不灌溉相比，土壤含水率增幅为22.85%～31.32%，可以有效缓解棉田春季旱情。不同处理的棉花，以盐分质量浓度1 g/L海冰水、灌溉3次的处理的产量、平均果枝数以及单颗棉桃质量3项指标均为最高，比不灌溉处理增产38.63%；其次为盐分质量浓度3 g/L海冰水灌溉2次的处理，增产率为 29.8%。随灌溉水矿化度增加，产量呈现递减趋势，盐分质量浓度为9 g/L、灌溉3次的处理与不灌溉处理相比出现显著减产，减产率为28.48%。综合考虑海冰水长期灌溉效应及海冰脱盐技术，建议采用盐分质量浓度3 g/L海冰水进行棉田灌溉，降雨正常年份以播种前和苗期2次灌溉为宜，每次灌水量450 m3/hm2，并要注意配合必要的灌溉和排水措施。 |
| 关 键 词： | 海冰，灌溉，土壤，盐水，棉花，产量，土壤水分 |
| 收稿时间： | 2009/12/16 0:00:00 |
| 修稿时间： | 2010/1/31 0:00:00 |
Effects of irrigation times and sea-ice water with different salt concentrations on soil water and yield of cotton |
|
| Wu Xueping,Zheng Yan,Liu Enke,Wang Xiaobing,Zhao Quansheng,Cha Yan,Cai Dianxiong,Bai Yang,Hu Yujiao.Effects of irrigation times and sea-ice water with different salt concentrations on soil water and yield of cotton[J].Transactions of the Chinese Society of Agricultural Engineering,2010,26(8):25-32. | |
| Authors: | Wu Xueping Zheng Yan Liu Enke Wang Xiaobing Zhao Quansheng Cha Yan Cai Dianxiong Bai Yang Hu Yujiao |
| Abstract: | In order to study the sea-ice water irrigation technology in the region near Bohai of China, the field micro-plot experiment was conducted to research soil moisture change and cotton yields using sea-ice water with different irrigation times and five salt concentrations (1, 3, 5L, 7 and 9 g/L) in 2008. The results showed that sea-ice water irrigation could improve soil moisture, especially during preplanting and seedling stage. The soil moisture content increased by about 22.85%-31.32% compared with CK (no irrigation) under the irrigation amount of 450 m3/hm2 each time could effectively relieve spring drought in cotton field. The cotton yields, boll number per plant and boll weight were the highest with sea-ice water of 1 g/L salt concentration (irrigated 3 times), which increased cotton yields by 38.63% compared with CK. The sea ice water of 3 g/L salt content (irrigated 2 times) increased yields by 29.8%. The cotton yields had decreasing trends with increased salt concentration of sea ice water used. The yields reduction rate with sea-ice water of 9 g/L salt concentration (irrigated 3 times) was 28.48% compared with CK (no irrigation). considering the desalinization technology, which and the long effects of salt concentrations of sea-ice water on soil and cotton yields, the results showed that sea-ice water of 3 g/L salt concentration could be used for cotton irrigation, in combination with drainage practices. In normal rain years, the sea-ice water could be irrigatted for cotton crops two times (before seedtime and at seedling stage) and irrigaton quantity was 450 m3/hm2 each time. |
| Keywords: | sea-ice irrigation soils salinity water cotton yield soil moisture |
| 本文献已被 万方数据 等数据库收录！ | |
| 点击此处可从《农业工程学报》浏览原始摘要信息 | |
| 点击此处可从《农业工程学报》下载免费的PDF全文 | |