EFFECTS OF IRRIGATION WITH FARMLAND DRAINAGE WATER ON SOIL WATER AND SALT TRANSPORT AND EARLY STAGE GROWTH OF COTTON

文献类型： 外文期刊

第一作者： Wang, Xingpeng

作者： Wang, Xingpeng;Gao, Yang;Duan, Aiwang;Wang, Xingpeng

作者机构：

关键词： farmland drainage; point source infiltration; nonpoint source infiltration; cotton; southern Xinjiang

期刊名称：FRESENIUS ENVIRONMENTAL BULLETIN （ 影响因子：0.489； 五年影响因子：0.479 ）

ISSN： 1018-4619

年卷期： 2018 年 27 卷 12 期

页码：

收录情况： SCI

摘要： Southern Xinjiang is in shortage of fresh water resources and riches in salty water resources, such as farmland drainage water, but poor in exploration and utilization. To evaluate the applicability of irrigation with farmland drainage water in the southern Xinjiang, experiments were conducted to investigate the characteristics of soil water and salt transport, and the effects on cotton seed germination and seedling growth under saline water irrigation. The salinity of farmland drainage water significantly affected on soil salt transport in the horizontal and vertical directions, and 2 g/L was the cutoff point for horizontal and vertical changes in the soil salt. Soil water infiltration decreased with increasing salinity of farmland drainage water under the same pressure head conditions, whereas also with decreasing pressure head. Soil saturated hydraulic conductivity (Ks) initially increased and then decreased after irrigation with drainage water of different salinity levels, while the opposite trend was found for the model parameter lambda(C). Irrigating with drainage water of 3 g/L to 5 g/L salinity slightly inhibited cotton seed germination, while with drainage water of salinity greater than 5 g/L strongly inhibited the seed germination. The suitable salinity of farmland drainage water was lower than 4 g/L, which had little impact on cotton seedling growth.

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