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Impact of irrigation water volume and deep vertical rotating tillage depth on the development and feeding quality of Suaeda salsa under drip irrigation

文献类型： 外文期刊

作者： Xu, Yibin 1 ; Xu, Qiang 1 ; Zhang, Qian 1 ; Liu, Hongguang 1 ; Wang, Gang 3 ; Gong, Ping 1 ; Li, Pengfei 1 ; Dang, Yingsheng 1 ; Li, Yufang 1 ; Wang, Jingrun 1 ; Guo, Yong 1 ; Wang, Tangang 4 ;

作者机构： 1.Shihezi Univ, Coll Water Conservancy & Architectural Engn, Shihezi 832000, Peoples R China

2.Xinjiang Prod & Construct Grp, Key Lab Modern Water Saving Irrigat, Shihezi 832000, Peoples R China

3.Xinjiang Acad Agr & Reclamat Sci, Shihezi 832000, Xinjiang, Peoples R China

4.Xinjiang Prod & Construct Corps, Inst Agr Sci, Div 3, Tumushuke 843900, Peoples R China

关键词： Suaeda salsa; Deep vertical rotary tillage; Irrigation volume; Forage quality

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）

ISSN： 0926-6690

年卷期： 2025 年 229 卷

页码：

收录情况： SCI

摘要： To examine the effects of deep vertical rotational tillage (DVRT) and irrigation water on the biomass, fodder quality, salinity absorption capacity, soil improvement, and economic benefits of Suaeda salsa, we conducted two-year field experiments. Utilizing multiple regression and geographical analysis techniques, we identified the optimal irrigation interval and DVRT range for multi-objective optimization. Three irrigation levels were set based on 0.35 (W1), 0.50 (W2), and 0.65 (W3) of the local ETo (reference evapotranspiration). DVRT depths of 20 (F1), 40 (F2), and 60 cm (F3) were tested. The results indicated that as the irrigation volume increased at the same DVRT depth, the growth index, feeding quality, biomass, net profit, salt absorption, and water use efficiency of Suaeda salsa significantly improved. The feed quality and soil salinity reduction at the W3 irrigation level were lower than those at the W2 level, indicating that higher irrigation levels did not always yield greater benefits. Although the salt absorption capacity was not maximized at the DVRT depth of F3, biomass, feed quality, soil salt reduction, and water use efficiency were maximized at the same irrigation level. The optimal amount of irrigation water for each parameter depended on the DVRT depth, making it impossible to simultaneously achieve the maximum relative feeding value, salt absorption capacity, soil salt reduction, water use efficiency, crude protein, and net profit. The multi-objective optimization analysis demonstrated that when the ideal irrigation water volume was 3124.96-3181.88 m3 ha(-1) and the DVRT depth was 53.68-55.39 cm, the net profit, salt absorption capacity, soil salinity reduction, water use efficiency, crude protein, and relative feeding value of Suaeda salsa reached over 83 % of their maximum values. These findings provide a solid scientific basis for extensive cultivation of Suaeda salsa in extremely dry regions.

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