Мақола

Effects of Buried Straw Strips with Different Internal Structures on Water and Salt Distribution and Leaching Efficiency in Coastal Saline Soil

Umidbek MasharifovCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaZhenchang WangCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaQingxin LiNational Center for Efficient Irrigation Engineering and Technology Research-Beijing, Beijing 100048, ChinaYaosheng WangCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaMinghao TianCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaXiaoman QiangKey Laboratory of Crop Water Use and Regulation, Farmland Irrigation Research Institute, Chinese Academy of Agricultural Science, Ministry of Agriculture and Rural Affairs, Xinxiang 453003, ChinaJinjing LiuCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaYuexiong WangCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaYanwei FanCollege of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaKexin ChenCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaSheng ChenCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, ChinaCheng HongCollege of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China

Agriculturejournal2024en

ABI

Аннотация

Straw strip burial in saline soil is an effective method for tideland reclamation in China, but optimal forms of straw strips for regulating soil water and salinity remain unclear. An indoor soil column test investigated the water and salt distribution in soil treated with four different straw forms under freshwater irrigation. The treatments included no straw layer (CK), straw stalks arranged longitudinally (T5), horizontally (T25), longitudinally combined horizontally in layers (T25+2.5), and randomly (T2.5). The results showed that compared to CK, T25, T5, and T25+2.5 significantly reduced the infiltration rate of irrigation water, leading to prolonged infiltration times. Wetting front curves under T5, T25+2.5, and T25 exhibited similar inverted “V” shapes, while CK and T2.5 showed fluctuating parallel lines. Water retention in the soil was higher under straw strip treatments (T5, T25, T25+2.5) and straw layer treatment (T2.5) compared to CK after 24 h of the first irrigation. T5 demonstrated the most effective salt removal, surpassing other treatments, with a desalination rate of 97.71%. Additionally, T5 had the highest salt leaching efficiency (SLE) in the 0–20 cm soil layer, recommending it as the optimal form for managing saline soils in crop production due to its simplicity and higher SLE. We found that buried straw strips reduced soil water infiltration rate and wetting front propulsion speed, increased soil water content and enhanced salt leaching efficiency in the saline soil. Our findings provide a basis for developing strategies that improve soil quality and irrigation efficiency, mitigate the effects of salinity on crop production, and ensure food security for a rapidly growing global population.

Ҳали таржима қилинмаган

Мавзулар

Soil and Unsaturated Flow Irrigation Practices and Water Management Soil erosion and sediment transport

Идентификаторлар

DOI: 10.3390/agriculture14070994

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