| 有机物添加对碱化土壤有机碳库及土壤质量的影响 |
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| 引用本文： | 温馨,红梅,张月鲜,裴志福,赵卉鑫,陈晨.有机物添加对碱化土壤有机碳库及土壤质量的影响[J].中国草地学报,2022(1):39-49. |
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| 作者姓名： | 温馨 红梅 张月鲜 裴志福 赵卉鑫 陈晨 |
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| 作者单位： | 内蒙古农业大学草原与资源环境学院;内蒙古自治区土壤质量与养分资源重点实验室 |
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| 基金项目： | 科技部国家重点研发项目“西北农田氮磷流失综合防控技术集成”(2018YFD0800802)。 |
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| 摘 要： | 以土默川苏打碱化土壤为研究对象,通过田间定位试验探讨不同有机物料添加对碱化土壤有机碳库与质量的影响.设置生物炭(BC)、牛粪(CD)、羊粪(GM)、玉米秸秆(SW)和对照(CK)共5个处理,于2019～2020年春季将所有有机物料以玉米秸秆全量还田(10.5t/hm2)为基准,按等量有机碳量(2.4t/hm2)的方式添...
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| 关 键 词： | 碱化潮土 有机物料 有机碳密度 酶活性 土壤质量 |
Effects of Organic Materials Addition on the Organic Carbon Pool and Soil Quality of Alkalized Soil |
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| WEN Xin,Hongmei,ZHANG Yue-xian,PEI Zhi-fu,ZHAO Hui-xin,CHEN Chen.Effects of Organic Materials Addition on the Organic Carbon Pool and Soil Quality of Alkalized Soil[J].Chinese Journal of Grassland,2022(1):39-49. |
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| Authors: | WEN Xin Hongmei ZHANG Yue-xian PEI Zhi-fu ZHAO Hui-xin CHEN Chen |
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| Institution: | (College of Grassland,Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010011,China;Key Laboratory of Soil Quality and Nutrient Resources in Inner Mongolia Autonomous Region,Hohhot 010011,China) |
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| Abstract: | Taking soda-alkalized soil of Tumochuan as the research object,the effect of different organic materials on the effects of different organic materials on the organic carbon pool and quality of alkalized soil was explored in this study through filed experiments,in which five treatments were set up,including biochar(BC),cow manure(CD),sheep manure(GM),corn straw(SW),and control(CK).In the spring of 2019~2020,all of the organic materials were added to the field based on the full corn straw returning(10.5 t/hm2),which was equivalent to the organic carbon amount of 2.4 t/hm2.Soil samples were collected after the autumn harvest,and the soil quality was evaluated by calculating soil quality index(SQI).The results showed that:(1)Under the treatment of organic materials addition,soil organic carbon content and density of the 0~30cm soil layer were significantly higher than that of CK(P<0.05).Corn straw treatment mainly increased the hardly oxidized organic carbon(P<0.05).Both easily and hardly oxidized organic carbon were increased under other treatments(P<0.05);(2)With the addition of cow dung and sheep dung,the available potassium and total nitrogen in the 0~30cm soil layer increased significantly(P<0.05).The addition of cow dung and straw significantly reduced soil alkalinity(P<0.05),while the addition of biochar and straw significantly decreased the soil pH;(3)The smaller the diameter of the water-stable aggregates in each treatment,the smaller the proportion,in which the increase of straw on large water-stable aggregates was the most significant(P<0.05);(4)The activity of soil invertase in all organic material treatments were higher than that of CK(P<0.05),and straw addition significantly increased the activity of soil phosphatase(P<0.05);(5)Biochar treatment had the best effect on increasing corn yield(P<0.05)that its above-ground biomass and corn yield increased by 80.37%and 103.11%,respectively,compared with CK.The rank of SQI among different treatments followed as:SW>BC>CD>GM>CK,and the corresponding index values were 0.75,0.55,0.55,0.51 and 0.47,respectively.In conclusion,when the amount of added organic carbon was 2.4 t/hm2,the straw treatment had optimal effect on the quality of moderately alkaline fluvo-aquic soil.This research provided scientific basis and feasible suggestions for the improvement of alkalized soil quality and the rational resource utilization of organic materials. |
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| Keywords: | Alkalized soil Organic material Organic carbon density Enzyme activity Soil quality |
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