中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地理科学与资源研究所
  3. 中国科学院地理科学与资源研究所
Establishing an ecological forest system of salt-tolerant plants in heavily saline wasteland using the drip-irrigation reclamation method

文献类型：期刊论文

作者Dong, Shide1,3; Wan, Shuqin1; Kang, Yaohu1,2; Li, Xiaobin1
刊名AGRICULTURAL WATER MANAGEMENT
出版日期2021-02-28
卷号245页码:12
ISSN号0378-3774
关键词Ecological conservation Drip irrigation Salt-tolerant plants Saline soil reclamation
DOI10.1016/j.agwat.2020.106587
通讯作者Kang, Yaohu(kangyh@igsnrr.ac.cn)
英文摘要Salinization in the low-lying edges of the Yinchuan plain, in northwest China, is a threat to productive farmland. An experiment, adopting "drip irrigation + high ridge + salt tolerant plant" reclaiming pattern, was conducted to develop a method of forest construction. The drip irrigation was scheduled by soil matric potentials (SMPs) monitored by tensiometers at both 20 cm and 50 cm depths exactly under drip emitters. There were five treatments marked as S1-S5, with their corresponding SMPs controlled higher than 5, 10, 15, 20 and 25 kPa. Two salt-tolerant plants, the Elaeagnus angustifolia and the Astragalus adsurgens, were planted on ridges for reclamation. Results showed that low salinity zones formed quickly under drip emitters and the average electrical conductivity of saturated soil paste extracts (ECe) within 60 cm depth increased as SMP thresholds decreased. The 3-year average ECe values were 1.8, 4.6, 6.0, 7.1 and 7.7 dS m-1 for S1-S5, respectively, reduced by 93.4%, 83.1%, 77.9%, 73.9% and 71.7% compared with initial values. Soil salt was progressively leached and reached to an equilibrium state when SMP was kept above 10 kPa within one growing season. Two growing seasons were required to reach a similar equilibrium for SMP threshold between 15 and 25 kPa. The soil pH increased 0.25, 0.11, 0.09, 0.05 and 0.07, and the soil sodium adsorption ratios declined by 59.3%, 36.2%, 37.8%, 44.9% and 42.7% in S1-S5, respectively, indicating a dealkalizing soil environment in all treatments. Plant growth indicators decreased as SMP thresholds declined and a threshold of 20 kPa was important to maintain plant survival rates and growths. Therefore, keeping SMP higher than -10 kPa in the first two years was important to ensure desalinization and that higher than -20 kPa in the third year was essential to maintain salt balance and plant growth. A method consisting of agronomic practices and a four-stage drip-irrigation schedule based on the key SMPs is recommended for constructing a forest system.
WOS关键词SOIL-SALINITY ; ELAEAGNUS-ANGUSTIFOLIA ; NITROGEN-FIXATION ; GROWTH ; CHINA ; WATER ; AREA ; L.
资助项目National Key Research and Development Program of China[2016YFC0501304] ; National Key Research and Development Program of China[2016YFC0501305] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDJ-SSW-DQC028] ; Study and Demonstration of High-efficiency Water-saving Irrigation Technology of Reducing salt and Increasing Grass (Feeding) for Grazing Experimental Demonstration Project
WOS研究方向Agriculture ; Water Resources
语种英语
出版者ELSEVIER
WOS记录号WOS:000606744200003
资助机构National Key Research and Development Program of China ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences ; Study and Demonstration of High-efficiency Water-saving Irrigation Technology of Reducing salt and Increasing Grass (Feeding) for Grazing Experimental Demonstration Project
源URL[http://ir.igsnrr.ac.cn/handle/311030/136900]  
专题中国科学院地理科学与资源研究所
通讯作者Kang, Yaohu
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Dong, Shide,Wan, Shuqin,Kang, Yaohu,et al. Establishing an ecological forest system of salt-tolerant plants in heavily saline wasteland using the drip-irrigation reclamation method[J]. AGRICULTURAL WATER MANAGEMENT,2021,245:12.
APA Dong, Shide,Wan, Shuqin,Kang, Yaohu,&Li, Xiaobin.(2021).Establishing an ecological forest system of salt-tolerant plants in heavily saline wasteland using the drip-irrigation reclamation method.AGRICULTURAL WATER MANAGEMENT,245,12.
MLA Dong, Shide,et al."Establishing an ecological forest system of salt-tolerant plants in heavily saline wasteland using the drip-irrigation reclamation method".AGRICULTURAL WATER MANAGEMENT 245(2021):12.

入库方式： OAI收割

来源：地理科学与资源研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。