水利学报2025，Vol.56Issue(4)：455-465,11.DOI:10.13243/j.cnki.slxb.20240294
渍后控制排水对土壤水分和大豆生长的短期与长期影响
Short-term and long-term effects of drainage control after waterlogging on soil water movement and soybean growth
摘要
Abstract
Short-term and long-term effects of waterlogging affect soil water movement and crop growth in farm-land.A set of soybean waterlogging experiments were conducted to evaluate the short-term effects of controlling drainage depth on soil moisture and crop growth and physiology before,during and after waterlogging,as well as the long-term effects during the growing stages.The results illustrate that reducing the control depth of drainage de-creases groundwater depth,drainage amount,and duration while increasing soil moisture content.The most signif-icant variation occurs after waterlogging and during the branching stage.After waterlogging,the plant height,leaf area index(LAI),leaf chlorophyll content(SPAD),net photosynthetic rate(Pn),stomatal conductance(Gs)and transpiration rate decrease first and then gradually recover compared with the control.The maximum relative value of SPAD,Pn and Gs after recovery and the increment of recovery period are the largest at the controlled depth of 50 cm,and the recovery duration of SPAD is the shortest.At flowering-podding stage,the compensation of plant height,LAI,Pn and Gs are the largest,and both Pn and Gs compensation are the most obvious at the controlled depth of 50 cm.The above-ground dry matter accumulation is reduced by waterlogging,and the reduc-tion follow the order of leaf＜fruit＜pod,and the yield reduction is mainly due to the decrease of pod number per plant.The reduction of the above-ground dry matter,yield and yield composition are the smallest at the controlled depth of 50 cm.Controlled drainage depth of 50 cm,will provide suitable soil water environment for soybean growth in the sandy loam area of Huaibei Plain.关键词
控制排水/渍后/土壤水分/生育期/产量Key words
drainage control/after waterlogging/soil moisture/growth stage/yield分类
农业工程引用本文复制引用
张威贤,王少丽,焦平金,许迪,郑思宇..渍后控制排水对土壤水分和大豆生长的短期与长期影响[J].水利学报,2025,56(4):455-465,11.基金项目
国家自然科学基金面上项目(52179054) （52179054）
