排灌机械工程学报2025，Vol.43Issue(10)：1057-1063,7.DOI:10.3969/j.issn.1674-8530.24.0061
低压喷灌调节干热风效果及冬小麦生长响应
Effect of low-pressure sprinkler irrigation on regulating dry-hot wind and winter wheat growth response
摘要
Abstract
In order to solve the serious impact of increasing frequency of dry-hot wind disaster on win-ter wheat growth and yield in North China Plain,field experiment was conducted by setting up low-pressure sprinkler irrigation(LS)and no irrigation(CK)treatment during the filling period of winter wheat,and the regulatory effect of low-pressure sprinkler irrigation on dry-hot wind was studied,for which the CK mode was used as the control.The experimental results show that LS can effectively im-prove the farmland microclimate under dry-hot wind conditions,especially during the irrigation period.Sprinkler irrigation with 2 mm of water can reduce the canopy temperature of winter wheat by 4.0-10.0℃,the air temperature at 80 cm above the canopy can drop by 2.0-4.0 ℃,and the relative hu-midity of the air increase by 6％-11％,for which the effect of a sprinkler irrigation on the microclimate lasts for about 1 h.After low-pressure sprinkler irrigation,the net photosynthetic rate(Pn),transpira-tion rate(Tr)and stomatal conductance(Gs)of winter wheat increase by 95％-201％,54％-104％and 70％-97％,respectively,and the intercellular CO2 concentration(Ci)decreases by about 4％-14％compared to CK.LS treatment can increase the grain weight by about 2.4 mg,and the 1 000-grain weight by about 2.7％during grain filling.The results of this study provide technical and data support for alleviating the effects of dry-hot wind on winter wheat in North China.关键词
冬小麦/低压喷灌/干热风/农田小气候/光合作用/千粒质量Key words
winter wheat/low-pressure sprinkler irrigation/dry-hot wind/field microclimate/photosynthesis/1 000-grain weight分类
农业工程引用本文复制引用
任煜辉,李伦,冯许钰,刘荣豪,刘海军..低压喷灌调节干热风效果及冬小麦生长响应[J].排灌机械工程学报,2025,43(10):1057-1063,7.基金项目
国家自然科学基金重点资助项目(51939005) （51939005）
山西省应用基础研究项目(202203021211139) （202203021211139）
