Salt leaching of heavy coastal saline silty soil by controlling the soil matric potential
文献类型： 外文期刊
作者： Wang, Xiuping 1 ; Xue, Zhizhong 1 ; Lu, Xuelin 1 ; Liu, Yahui 1 ; Liu, Guangming 2 ; Wu, Zhe 1 ;
作者机构： 1.Hebei Acad Agr & Forestry Sci, Inst Coastal Agr, Tangshan Key Lab Plant Salt Tolerance Res, Tangshan, Peoples R China
2.Chinese Acad Sci, Inst Soil Sci, Beijing, Peoples R China
关键词： drip irrigation; oil sunflower; reclamation of saline soil; ridge cultivation; water control
期刊名称：SOIL AND WATER RESEARCH （ 影响因子：2.056； 五年影响因子：1.92 ）
ISSN： 1801-5395
年卷期： 2019 年 14 卷 3 期
页码：
收录情况： SCI
摘要： Techniques of drip irrigation are broadly applied for the reclamation of saline-alkali lands, during which effective management of water use to accelerate salt leaching is essential for crop production. In 2017, a field experiment with five treatments of soil matric potential (SMP) levels of -5, -10, -15, -20, and -25 kPa was conducted in heavy saline silty soil land in Bohai Bay, China to study the effects of drip irrigation on salt leaching. 'Ihe results showed that salt leaching was enhanced with increasing SMP, particularly under an SMP of -5 kPa within a 30 cm soil profile depth and 15 cm distance from the dripper, and the average electrical conductivity of saturated paste extracts (ECe) decreased from 13.8 to 1.52 dS/m. Water consumption increased with increasing SMP, but the yield of oil sunflower did not differ significantly between SMPs of -5 and -10 kPa. These findings indicated that a relatively high crop yield of oil sunflower and effective salt leaching can be achieved if the SMP can be controlled at -10 kPa in heavy saline silty soil.
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