| 西南丘陵区保护性耕作下小麦农田土壤呼吸及影响因素分析 |
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| 引用本文： | 张赛,张晓雨,王龙昌,罗海秀,周航飞,马仲炼,张翠微.西南丘陵区保护性耕作下小麦农田土壤呼吸及影响因素分析[J].环境科学,2013,34(7):2815-2820. |
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| 作者姓名： | 张赛 张晓雨 王龙昌 罗海秀 周航飞 马仲炼 张翠微 |
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| 作者单位： | 西南大学农学与生物科技学院,南方山地农业教育部工程研究中心,重庆400716 |
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| 基金项目： | 国家自然科学基金项目(31271673); 国家自然科学基金项目(30871474); 重庆市科技攻关项目(CSTC,2008AB1001) |
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| 摘 要： | 为了探讨保护性耕作对旱作农田土壤呼吸的影响,采用LI6400-09呼吸室在重庆北碚西南大学试验农场对平作(T)、垄作(R)、平作+覆盖(TS)、垄作+覆盖(RS)这4种处理下的西南紫色土丘陵区小麦/玉米/大豆套作体系中小麦作物生长季节的土壤呼吸及其水热生物因子进行了测定和分析.结果表明,小麦生殖生长阶段农田土壤呼吸速率变化范围为1.100～2.508μmol.(m2.s)-1,各处理的土壤呼吸速率差异显著,表现为RS>R>TS>T.各处理10 cm土层的土壤温度表现为T>R>TS>RS.土壤呼吸与土壤温度的关系符合指数函数,Q10值分别为1.25、1.20、1.31和1.26.5 cm土层的土壤含水量高低排序为TS>RS>T>R.土壤水分与土壤呼吸以抛物线曲线拟合最好,说明存在土壤呼吸最强的土壤含水量点,本研究得出小麦生殖生长阶段在土壤含水量的响应阈值为14.80%～17.47%.土壤动物中优势类群为弹尾目和螨目,与土壤呼吸存在一定相关性,对照处理和垄作下相关性高,而秸秆覆盖的处理土壤呼吸与土壤动物没有明显的相关性.
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| 关 键 词： | 西南丘陵区 小麦农田 土壤呼吸 土壤温度 土壤湿度 土壤动物 |
| 收稿时间： | 2012/10/24 0:00:00 |
| 修稿时间： | 2012/12/17 0:00:00 |
Analysis of Soil Respiration and Influence Factors in Wheat Farmland Under Conservation Tillage in Southwest Hilly Region |
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| ZHANG Sai,ZHANG Xiao-yu,WANG Long-chang,LUO Hai-xiu,ZHOU Hang-fei,MA Zhong-lian and ZHANG Cui-wei.Analysis of Soil Respiration and Influence Factors in Wheat Farmland Under Conservation Tillage in Southwest Hilly Region[J].Chinese Journal of Environmental Science,2013,34(7):2815-2820. |
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| Authors: | ZHANG Sai ZHANG Xiao-yu WANG Long-chang LUO Hai-xiu ZHOU Hang-fei MA Zhong-lian and ZHANG Cui-wei |
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| Institution: | Engineering Research Center of South Upland Agriculture, Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China;Engineering Research Center of South Upland Agriculture, Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China;Engineering Research Center of South Upland Agriculture, Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China;Engineering Research Center of South Upland Agriculture, Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China;Engineering Research Center of South Upland Agriculture, Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China;Engineering Research Center of South Upland Agriculture, Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China;Engineering Research Center of South Upland Agriculture, Ministry of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China |
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| Abstract: | |
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| Keywords: | southwest hilly area wheat farmland soil respiration soil temperature soil moisture soil animal |
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