| 余美,杨劲松,刘梅先,李晓明,王进.膜下滴灌灌水频率对土壤水盐运移及棉花产量的影响[J].干旱地区农业研究,2011,29(3):18~23 |
| 膜下滴灌灌水频率对土壤水盐运移及棉花产量的影响 |
| Effects of mulched drip irrigation frequency on soil water salt transport and cotton yield |
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| DOI：10.7606/j.issn.1000-7601.2011.03.04 |
| 中文关键词: 膜下滴灌 水盐运动 灌水频率 棉花 产量 |
| 英文关键词:mulched drip irrigation transport of soil water-salt irrigation frequency cotton yield |
| 基金项目:国家自然科学基金项目(40771097)； 公益性行业(农业)科研专项经费项目(200903001)； 国家科技支撑计划项目课题(2006BAD05B02,2007BAC17B04)； 新疆自治区科技攻关项目(200733144-1)； 国家“863”计划重点项目课题(2006AA100207) |
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| 中文摘要: |
| 通过棉花膜下滴灌大田试验,研究了灌水频率对土壤水盐运移和分布规律的影响,并对不同灌水频率的保墒、控盐、增产效果进行了评价。试验结果表明:在灌溉水质为淡水且定额为375 mm时,低频(10 d)和适频(7 d)灌溉下膜内0~60 cm土层的含水量适宜,低频灌溉的含水量最高,而高频(3 d)灌溉下各土层在花铃期处于轻度干旱状态。低频灌溉对膜内及背行的综合控盐效果略优于高频,远优于适频。灌水频率对棉花产量有显著影响,高频灌溉的棉花产量最高。 |
| 英文摘要: |
| A cotton field experiment under mulched drip irrigation was carried out in order to study the effects of
different irigation frequency on soil water salt transport and distribution, and to evaluate different irrigation frequencies efficiency in preserving moisture ，controlling soil salinization, and increasing cotton yield. The results show that the soil moisture contents are not the same under different irrigation frequencies with fresh water at 375 mm，namely, low fre-quent irigation (10 days) and middle frequent irmigation (7 days) can all make the moisture suitable in soil layers of 0~60 cm，and the moisture content is the highest under low frequent irigation. Contrarily， the soil layers are in light -de-gree drought condition during flowering and boll fomming stage under high frequent irmigation (3 days) . Based on compre-hensive analysis on salinization or desalinization status of root zone under film and un mulched soil, low frequent irriga-tion is slightly better than high frequent irrigation and much better than middle frequent irigation. The irrigation frequen-cy has significant influence on cotton yield, and the highest yield can be obtained under high frequent irigation. |
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