Ｒesearch on the Evaporation Capacity and Water－Salt Variation
Characteristics of Different Types of Saline Wasteland

China Rural Water and Hydropower ›› 2019 ›› (9) : 49-53.

Ｒesearch on the Evaporation Capacity and Water－Salt Variation Characteristics of Different Types of Saline Wasteland

YANG Xu1 ，ZHU Qin2 ，MA Meng-chen1 ，WU Jing-wei 1

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Dry drainage through intense evaporation from saline wasteland is an important way to control soil salinity in arid and semi－arid irrigation areas． In order to explore the effect of saline wasteland utilization on dry drainage，this paper selects three kinds of bare saline wasteland，covered with woody and herbaceous plants in the Hetao Irrigation District of Inner Mongolia respectively，and conducts a five－ month observation of soil water and salt dynamics in the irrigation season of 2018． A soil water balance is made to evaluate the evapotranspiration from the saline wastelands． The results show that halophytes can effectively reduce the evaporation from the soil surface， promote soil water consumption from deep layers through transpiration and disperse salt in soil profile． It is proved that halophytes planting in saline wastelands can increase the evaporation capacity and prolong the service life of dry drainage system． These findings serve as a theoretical basis for planning and designing dry drainage system in arid irrigation areas．

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dry drainage / saline wasteland / evaporation capacity / water and salt regulation

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YANG Xu, ZHU Qin, MA Meng-chen, WU Jing-wei. Ｒesearch on the Evaporation Capacity and Water－Salt Variation Characteristics of Different Types of Saline Wasteland. China Rural Water and Hydropower. 2019, 0(9): 49-53

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Received	Revised	Published
2019-05-31	2019-04-20	2019-09-15
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2020-01-02

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