寒旱农业科学2025，Vol.4Issue(11)：1019-1024,6.DOI:10.3969/j.issn.2097-2172.2025.11.007
河西灌区秸秆留茬免耕对春小麦生育期最低贮水量的影响
Effects of No-tillage with Straw Stubbles on the Minimum Water Storage of Spring Wheat During Its Growth Period in Hexi Irrigation Area
摘要
Abstract
This study investigated how different spring wheat cropping systems affected the minimum soil water storage under no-tillage with stubbles,providing a basis for efficient straw-returning production of spring wheat in the Hexi irrigation area.Using the Hexi irrigation area as the study area and conducting field-fixed experiments,effects of no-tillage with stubbles on the minimum soil water storage of spring wheat during the entire growth period were examined under 3 typical spring wheat planting modes:wheat monoculture,wheat-soybean intercropping and wheat-corn intercropping.Results showed that no-tillage with straw stubbles had a remarkable regulatory effect on the soil water storage of spring wheat,however,this effect was subject to multiple influencing factors of planting pattern,soil depth and growth stage.Under the 3 typical spring wheat planting modes of wheat monoculture,wheat-soybean intercropping and wheat-corn intercropping,the increase of minimum soil water storage during the sowing period of spring wheat was mainly concentrated in the upper thawed layer,the minimum water storage in most soil layers showed a significant increase from seedling to panicle stage,whereas only part of the soil layers of spring wheat-soybean intercropping had an increase in water storage during the filling stage.After harvest,the improvement of soil water storage was mainlyin the soil layer from 0 to 40 cm.No-tillage with straw stubbles significantly increased the minimum cumulative soil water storage in the 0 to 100 cm profile from sowing to filling period of spring wheat by 2.52％to 7.33％,3.25％to 7.37％,and 2.81％to 6.59％for wheat monoculture,wheat-soybean intercropping and wheat-corn intercropping,respectively,and the average minimum soil water storage in the 0 to 100 cm soil layer during the entire growth period was significantly increased by 4.20％,4.82％,and 4.23％for the 3 planting patterns,respectively.In summary,no-tillage with straw stubbles can provide stable water supply for spring wheat growth by optimizing soil water retention,which is of great significance to ensure high and stable yield of spring wheat.关键词
春小麦/秸秆留茬免耕/贮水量/保护性耕作/生育期/河西灌区Key words
Spring wheat/No-tillage with crop stubble/Water storage/Conservation tillage/Growth period/Hexi irrigation area分类
农业科技引用本文复制引用
卢秉林,张久东,崔恒,杨蕊菊,王婷..河西灌区秸秆留茬免耕对春小麦生育期最低贮水量的影响[J].寒旱农业科学,2025,4(11):1019-1024,6.基金项目
国家自然科学基金(42167010). （42167010）
