水土保持通报2025，Vol.45Issue(2)：181-189,9.DOI:10.13961/j.cnki.stbctb.2025.02.019
东北黑土区可耕作地埂技术的应用效果
Application effects of tillable earth bund technology in black soil region of Northeast China
摘要
Abstract
[Objective]The effects of tillable earth bund(TEB)technology on soil structure,crop yield,and soil and water conservation in sloping cultivated land within the black soil region of Northeast China were examined,in order to provide a scientific basis for optimizing soil and water conservation strategies in this area.[Methods]The experimental field(EF)was located on sloping cultivated land with an average gradient of 5°.The study area included a region constructed with TEBs and a nearby field with conventional tillage practices that were similar in slope and area but without constructed bunds;it was selected as the control field for conventional tillage(CTF).Within the EF,soil samples were collected from the TEB-constructed area and the traditional tillage area without bunds.Changes in soil bulk density,aggregate characteristics,and soil moisture were compared before and after the rainy season.Runoff depth,soil erosion,and crop yield were also monitored.[Results]After the rainy season,soil bulk density increased across all regions,while the proportion of＞0.25 mm water-stable aggregates(WSA＞0.25)and mean weight diameter(MWD)decreased.Soil bulk density in the EF was significantly lower than in the CTF(p＜0.05),with the lowest value observed in the TEB area(1.18 g/cm3).The content of＞2 mm aggregates in the EF was significantly higher than that in the CTF(p＜0.05),with the smallest reduction occurring in the TEB.The WSA＞0.25 and MWD in the TEB area were 10.58％and 0.36 mm higher than those in the CTF,respectively(p＜0.05).Throughout the growing season,soil moisture in the EF was significantly higher than that in the CTF,whereas runoff depth and soil erosion declined by 35.10％and 51.60％,respectively.The TEB area exhibited the highest seedling emergence and maize yield.[Conclusion]TEB technology effectively enhances soil structure,water retention,and water-soil conservation while boosting crop yield.This technology is well suited for large-scale implementation on sloping cultivated land across the black soil region of Northeast China.关键词
可耕作地埂/黑土/水土流失/土壤结构/玉米产量Key words
tillable earth bund/black soil/soil and water erosion/soil structure/maize yield分类
农业科学引用本文复制引用
吴旭,陈强,郭明明,李召..东北黑土区可耕作地埂技术的应用效果[J].水土保持通报,2025,45(2):181-189,9.基金项目
国家重点研发计划项目"黑土地侵蚀退化功能重建机制与阻控技术"(2021YFD1500800) （2021YFD1500800）
国家自然科学基金青年项目"东北冷凉区黑土农田条耕水热效应研究"(42101281) （42101281）
