Application of carboxymethyl cellulose sodium (CMCNa) in maize-wheat cropping system (MWCS) in coastal saline-alkali soil

被引：6
作者：
Li, Ge [1 ]
Shan, Yuyang [1 ]
Nie, Weibo [1 ]
Sun, Yan [1 ]
Su, Lijun [1 ]
Mu, Weiyi [1 ]
Qu, Zhi [1 ]
Yang, Ting [2 ]
Wang, Quanjiu [1 ]
机构：
[1] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China
[2] Guangdong Acad Sci, Guangzhou Inst Geog, Guangzhou 510070, Peoples R China
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 912卷
关键词：
carboxymethyl cellulose sodium; maize-wheat cropping system; Net profit; Coastal saline-alkali soil; POLYACRYLAMIDE; FERTILIZER; NUTRIENTS; WATER; PHOSPHORUS; COMMUNITY; HYDROGEL; CARBON; LAND;
D O I：
10.1016/j.scitotenv.2023.169214
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Sodium carboxymethyl cellulose (CMCNa) application has been a promising approach to improve soil quality. The purpose of this study was to explore the effects of CMC-Na on soil infiltration, evaporation, water-salt distribution, crop growth, water use efficiency and net profit (Net) in a coastal saline-alkali soil maize-wheat cropping system (MWCS). Five CMC-Na application amounts (0, 0.1, 0.2, 0.4 and 0.6 g kg(-1)) were designed for the soil column experiment indoor, and five CMC-Na application amounts were used in 2019-2020 field experiment (CK: 0, C10: 10 kg ha(-1), C20: 10 kg ha(-1), C30: 10 kg ha(-1) and C50: 10 kg ha(-1)), No treatment will be applied in 2021. The results showed that (1) CMC-Na treatment reduced soil cumulative infiltration, infiltration rate, daily evaporation, and cumulative evaporation. (2) After the application of CMCNa, the average soil water storage (SWS) in the 0-60 cm soil layer increased, and soil salinity (SSC) decreased in most treatments. (3) In the 2019-2020, the maize aboveground biomass (B), yield (Y) and water use efficiency (WUE) were the highest under the C20 and C30 treatments, which were 15.24 and 15.32 t ha(-1), 5.67 and 5.49 t ha(-1) and 1.74 and 1.52 kg ha(-1) mm(-1), respectively, and the wheat under C30 treatment is the highest, which were 10.98 t ha(-1), 5.27 t ha(-1) and 1.78 kg ha(-1) mm(-1). (4) A dose of 25.5 kg ha(-1) and 38.9 kg ha(-1) was recommended as the most optimal CMC-Na application for maize and wheat in coastal saline alkali soil, respectively.
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页数：11
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