灌溉排水学报2026，Vol.45Issue(5)：10-18,9.DOI:10.13522/j.cnki.ggps.2025322
咸水替代对滨海盐碱地干旱胁迫小麦幼苗生长及土壤性质的影响
Effects of partially substituting freshwater with saline water in irrigation on wheat seedlings and soil properties of coastal saline-alkali soils under drought
摘要
Abstract
[Objective]In arid and semi-arid regions of the Yellow River Delta,where freshwater is scarce and saline water is abundant,partially substituting freshwater with saline water in irrigation is a potential strategy for agriculture.However,excessive use of saline water negatively affects crops and soil health.This study experimentally investigated the safe limit saline water substitution ratio for irrigating wheat seedlings.[Method]The experiment was conducted in pots filled with a moderately saline soil collected from the Yellow River Delta.It consisted of eight treatments:sufficient irrigation with freshwater(CK1),water stress+irrigation with freshwater(CK2),and water stress+substituting 1/6(W1),1/3(W2),1/2(W3),2/3(W4),5/6(W5),and 6/6(W6)of the freshwater used in CK2.During the experiment,the growth and physiological traits of the wheat seedlings,as well as soil properties were measured in each treatment.[Result]①Compared with CK2,treatments W1,W2 and W3 did not show significant differences in plant height,stem diameter,root-shoot ratio,root surface area,and the activities of urease,sucrase and catalase.②Treatments W4,W5 and W6 not only resulted in significant decreases in fresh and dry weight,total root length,root projected area,root surface area,and root tip number,but also reduced water use efficiency,chlorophyll content,leaf glutathione content,and the activities of peroxidase and superoxide dismutase.③Soil salt content increased as the saline water substitution ratio increased.Compared with CK2,W4-W6 increased the soil salt content by more than 64.93％.[Conclusion]Increasing the saline water substitution ratio in irrigation resulted in a significant decrease in wheat growth and deterioration of soil properties.Considering the combined effects of saline water on wheat and soil,substituting less than one-half of freshwater with saline water is the save limit for irrigating wheat seedlings.关键词
咸水替代/滨海盐碱地/干旱胁迫/小麦生长/土壤盐渍化Key words
saline water substitution/Coastal Saline-alkali Land/drought stress/wheat growth/soil salinization分类
农业科技引用本文复制引用
张辉,潘红,杨全刚,高子安,李希臣,晁赢,娄燕宏,诸葛玉平,韩飞,李亚平,王会..咸水替代对滨海盐碱地干旱胁迫小麦幼苗生长及土壤性质的影响[J].灌溉排水学报,2026,45(5):10-18,9.基金项目
国家重点研发计划项目(2021YFD190090207) （2021YFD190090207）
山东省重点研发计划(竞争性创新平台)项目(2025CXPT151) （竞争性创新平台）
山东省盐碱地农业产业技术体系(SDARS-29-01) （SDARS-29-01）
