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干旱地区棉田膜下滴灌盐分运移规律/Salt transfer law for cotton field with drip irrigation under mulch in arid region[J]
Authors
Hudan·Tumaerbai
Mahemujiang·Aihemaiti
+12 more
Mu Hongchen
Su Litan
Wang Yimin
Zhang Jinzhu
中科院新疆生态与地理研究所,乌鲁木齐,830011
张金珠
新疆农业大学水利与土木工程学院,乌鲁木齐,830052
牟洪臣
王一民
苏里坦
虎胆·吐马尔白
马合木江·艾合买提
Publication date
1 January 2011
Publisher
Abstract
以田间实测数据为基础,研究棉田膜下滴灌对土壤盐分的变化.通过对棉田4个不同的生育期以及不同滴灌年限棉田盐分的变化进行了分析,初步得到,棉田在生育期盐分变化特征是0~20 cm含盐率从播前到苗期减小、盛铃期增大、吐絮期减小的趋势,>40~80 cm从播前缓慢增加、盛铃期~吐絮期逐渐减少;水平方向滴头处盐分累积最少,膜间处盐分累积较多;垂直方向上0~20 cm土层盐分减少,>60~100 cm土层累积程度较大;不同滴灌年限棉田随滴灌年限的延长各层土壤含盐率相应增加并且在>60~100 cm增加的趋势显著,且滴头、行间、膜间的总含盐率是依次增加;>60~100 cm已成积聚盐分的最大区域;在棉花生育期内,0~60 cm土壤呈脱盐状态,60~100 cm土壤呈积盐状态.该结果可为干旱区棉花膜下滴灌水盐的治理与防治提供参考
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016