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低山丘陵坡耕地秸秆覆盖轮耕对土壤水热及碳氮库的影响
引用本文:王根林,段衍,刘峥宇,王楠楠,高阳,李玉梅,孟祥海,王伟,蔡姗姗,孙磊.低山丘陵坡耕地秸秆覆盖轮耕对土壤水热及碳氮库的影响[J].土壤学报,2023,60(4):1058-1066.
作者姓名:王根林  段衍  刘峥宇  王楠楠  高阳  李玉梅  孟祥海  王伟  蔡姗姗  孙磊
作者单位:黑龙江省农业科学院土壤肥料与环境资源研究所,中国科学院合肥物质科学研究院,黑龙江省绥滨农场,黑龙江省农业科学院土壤肥料与环境资源研究所,农业农村部耕地质量监测保护中心,黑龙江省农业科学院土壤肥料与环境资源研究所,黑龙江省农业科学院牡丹江分院,黑龙江省农业科学院土壤肥料与环境资源研究所,黑龙江省农业科学院土壤肥料与环境资源研究所,黑龙江省农业科学院土壤肥料与环境资源研究所
基金项目:国家重点研发计划项目(2022YFD0700804)、国家大豆产业技术体系 (CARS-04-01A)和黑龙江省产业协同技术体系课题(20190506)共同资助
摘    要:为了提高坡耕地的秸秆还田效率,探索一种适于坡耕地的基于种植和养地基础上的耕作方式。利用田间小区试验,研究了秸秆覆盖轮耕技术(包括当季秸秆覆盖+休闲、上季秸秆覆盖+旋耕)与常规耕作(秸秆移除后旋耕)对土壤水热变化及碳、氮积累的影响。结果表明:秸秆覆盖可显著提高播种前期20~40 cm土壤含水量,覆盖休闲与覆盖旋耕处理较常规耕作分别提高26.02%和37.49%,同时覆盖旋耕处理降低了20~40 cm土壤容重,较常规耕作和覆盖休闲分别降低6.52%和13.04%;与覆盖旋耕相比,覆盖休闲可降低作物生育前期0~20 cm和20~40 cm土层温度1.57 ℃~1.63 ℃,而土壤含水量提高15.25%~24.41%,为覆盖旋耕区作物出苗和前期生长提供了水分条件;通过秸秆覆盖休闲与覆盖旋耕组合的轮耕技术可提高0~20 cm土层碳氮含量,有机碳和全氮储量较常规耕作平均提高11.36%和20.51%,为今后低山丘陵区坡耕地实施保护性耕作提供了科学依据。

关 键 词:坡耕地  秸秆覆盖  轮耕  土壤水热  碳氮库容
收稿时间:2021/10/28 0:00:00
修稿时间:2022/3/14 0:00:00

Effects of Soil Hydrothermal Response and Pools of Carbon and Nitrogen Under Straw Cover Rotation on Slope Farmland of Low Mountains and Hills
WANG Genlin,DUAN Yan,LIU Zhengyu,WANG Nannan,GAO Yang,LI Yumei,MENG Xianghai,WANG Wei,CAI Shanshan,SUN Lei.Effects of Soil Hydrothermal Response and Pools of Carbon and Nitrogen Under Straw Cover Rotation on Slope Farmland of Low Mountains and Hills[J].Acta Pedologica Sinica,2023,60(4):1058-1066.
Authors:WANG Genlin  DUAN Yan  LIU Zhengyu  WANG Nannan  GAO Yang  LI Yumei  MENG Xianghai  WANG Wei  CAI Shanshan  SUN Lei
Institution:Institute of Soil Fertility and Environmental Resources, Heilongjiang Academy of Agricultural Sciences,Hefei Institute of Material Science of Chinese Academy of Sciences,Heilongjiang Suibin Farm, Suibin,Institute of Soil Fertility and Environmental Resources, Heilongjiang Academy of Agricultural Sciences,Farmland Quality Monitoring and Protection Center of the Ministry of Agriculture and Rural Affairs,Institute of Soil Fertility and Environmental Resources, Heilongjiang Academy of Agricultural Sciences,Mudanjiang Branch of Heilongjiang Academy of Agricultural Sciences, Mudanjiang,Institute of Soil Fertility and Environmental Resources, Heilongjiang Academy of Agricultural Sciences,Institute of Soil Fertility and Environmental Resources, Heilongjiang Academy of Agricultural Sciences,Institute of Soil Fertility and Environmental Resources, Heilongjiang Academy of Agricultural Sciences
Abstract:
Keywords:Sloping farmland  Straw mulch  Rotatin tillage  Soil water and heat  Carbon and nitrogen storage
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