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Soil salinity, sodicity and cotton yield parameters under different drip irrigation regimes during saline wasteland reclamation
Wang, Ruoshui1; Wan, Shuqin2; Sun, Jiaxia2; Xiao, Huijie1
2018-10-30
Source PublicationAGRICULTURAL WATER MANAGEMENT
ISSN0378-3774
Volume209Pages:20-31
Corresponding AuthorWang, Ruoshui(wrsily_2002@163.com)
AbstractA field trial consisting of cotton grown employing a combination of ridge planting, mulching with film, and drip irrigation was laid out on a plot with severely saline soil in a typical inland arid area of Xinjiang. The effect of five levels of soil matric potential set up 0.2 m below the drip emitter, namely - 5 kPa, -10 kPa, -15 kPa, -20 kPa, and -25 kPa, were studied in terms of changes in soil salinity (EC,), sodicity (SAR), crop growth and yield components. Drip irrigation increased the leaching of soil salts and decreased the EC, and SAR of each soil layer. Although the levels of soil salt rose again, in spring and winter, after irrigation was discontinued, the root zone (0-40 cm) remained less saline: the ECe and SAR value under the soil matric potential of - 5 kPa and -10 kPa were 63% and 49% of its values in 2009 respectively, before the land was brought under cultivation (p <= 0.05), showing maximum leaching. The yield of cotton peaked at the soil matric potential of - 5 kPa. The germination rate, which was the main factor that influenced the cotton yield, was 67% of that in non-saline soil in the first two years, and increased to 84% in the third year. After three years, the rate of germination in all the treatments exceeded 67%, and the highest rate (78%) was at - 5 kPa; in the same treatment, boll yield was 4.40 g per plant. Except for germination rate and the yield of lint and seed, all the yield components increased significantly (p <= 0.05) as ECe and SAR decreased in 2010 and 2011. The correlation between soil salt (salinity and sodicity) and other components such as the number of cotton bolls per plant, the average weight of a boll, and lint percentage varied, probably because water supply was being regulated and, as a result, the physicochemical properties of the soil kept changing constantly. Taking into account the extent of leaching, crop growth, and yield, the lower limit for the soil matric potential should be -5 kPa at 20 cm below the dripper for the first three years during reclamation to promote cotton cultivation on the saline-sodic soil of Xinjiang.
KeywordSoil ECe Soil SAR Drip irrigation Cotton boll number Lint percentage Germination rate
DOI10.1016/j.agwat.2018.07.004
WOS KeywordGOSSYPIUM-HIRSUTUM L. ; NORTHWEST CHINA ; WATER-USE ; GROWTH ; AREA ; AMELIORATION ; STRATEGIES ; TOLERANCE ; RESPONSES ; SODIUM
Indexed BySCI
Language英语
Funding ProjectFundamental Research Funds for the Central Universities[2017PT12] ; Fundamental Research Funds for the Central Universities[2016ZCQ06] ; Fundamental Research Funds for the Central Universities[2015ZCQ-SB-03]
Funding OrganizationFundamental Research Funds for the Central Universities
WOS Research AreaAgriculture ; Water Resources
WOS SubjectAgronomy ; Water Resources
WOS IDWOS:000443661600003
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54288
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Ruoshui
Affiliation1.Beijing Forestry Univ, Coll Soil & Water Conservat, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Wang, Ruoshui,Wan, Shuqin,Sun, Jiaxia,et al. Soil salinity, sodicity and cotton yield parameters under different drip irrigation regimes during saline wasteland reclamation[J]. AGRICULTURAL WATER MANAGEMENT,2018,209:20-31.
APA Wang, Ruoshui,Wan, Shuqin,Sun, Jiaxia,&Xiao, Huijie.(2018).Soil salinity, sodicity and cotton yield parameters under different drip irrigation regimes during saline wasteland reclamation.AGRICULTURAL WATER MANAGEMENT,209,20-31.
MLA Wang, Ruoshui,et al."Soil salinity, sodicity and cotton yield parameters under different drip irrigation regimes during saline wasteland reclamation".AGRICULTURAL WATER MANAGEMENT 209(2018):20-31.
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