Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (34): 91-96.doi: 10.11924/j.issn.1000-6850.casb2021-1180

Special Issue: 生物技术 油料作物 棉花 农业生态

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Effects of Different Amendments on Saline-alkali Soil Improvement and Cotton Growth in Xinjiang

ZHOU Xianlin1(), QIN Qin1, MENG Yongming2, WANG Long1,2, HU Chengcheng1, ZHU Haiyong1,2(), LAI Bo3()   

  1. 1Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, Xinjiang 831100
    2Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, Henan 455000
    3Xinjiang Fine Varieties Breeding Base in Hainan, Urumqi 830000
  • Received:2021-12-07 Revised:2022-02-24 Online:2022-12-05 Published:2022-11-25
  • Contact: ZHU Haiyong,LAI Bo E-mail:zxl20032003@126.com;nkyxbzx@163.com;laiboxj@163.com

Abstract:

Focusing on the characteristics of saline-alkali soil in the arid area of Xinjiang, the most appropriate soil amendment for saline-alkali soil improvement was screened. We carried out field plot experiments, designed four treatments, including control group (CK), Yanjianzhuanjia (Y), urea phosphate (L) and Weilizhuang (W), and analyzed the effects of soil amendments on the salinity, pH, total alkalinity, and sodium adsorption ratio (SAR) in 20 cm surface layer of medium saline-alkali soil and cotton seedling growth and yield. The results showed that all amendments reduced soil salt content and pH, promoted cotton seedling growth and improved cotton yield. Compared with CK, Y treatment and L treatment had better effects of restraining salt, and reduced the relative salinity increase rate by 107.73% and 101.67%, respectively; Y treatment significantly decreased soil pH by 0.15 units, and significantly promoted cotton seedling growth and increased cotton yield by 5.84%; Y treatment and W treatment had the best effects on reducing total alkalinity of soil, with an significant decrease by 0.46 and 0.41 units, respectively, but their reducing effects on SAR were not obviously different from CK. In conclusion, according to the effects of all amendments on soil physical and chemical properties and cotton yield, Yanjianzhuanjia is recommended as the most suitable saline-alkali soil amendment for the test area.

Key words: saline-alkali soil, soil amendment, cotton, yield, plant growth

CLC Number: