长期化肥减量配施不同有机肥对土壤碳库的影响  

Effects of Long-Term Reduction of Chemical Fertilizer and Different Organic Fertilization Combined Application on Soil Carbon Pool

作　　者：付桃秀 吴建富[1] 卢志红[1] 肖青亮[1] 

机构地区：[1]江西农业大学双季稻现代化生产协同创新中心/作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室,江西南昌 [2]江西省灌溉试验中心站,江西南昌

出　　处：《土壤科学》2019年第3期186-191,共6页Hans Journal of Soil Science

基　　金：国家自然科学基金项目(31660596);国家重点研发计划课题(2017FYD0301601)。

摘　　要：通过连续35年的定位试验,在氮磷钾养分施用量相等的水平下,研究了化肥减量配施有机肥料对红壤稻田土壤碳库的影响。结果表明,施用有机肥提升土壤中不同形态碳素含量显著高于单施化肥的效果(p <0.05)。与单施化肥相比,连续配施有机肥料有利于提高土壤碳库管理指数和活性碳、矿化碳有效率,增幅分别为15.37%~37.84%、1.77%~8.30%和4.62%~29.78%。相关分析表明,土壤碳库管理指数与土壤总有机碳、活性碳、矿化碳和微生物量碳均呈极显著相关。A 35 years long-term experiment with five different kinds of fertilizer application treatments was conducted to examine the effect of organic-inorganic fertilizer combined application on soil carbon pool in reddish paddy soil under the conditions of equal Nitrogen,phosphorus and potassium nu-trient.The results showed that the contents of various soil carbon forms were increased higher by organic fertilizer than chemical fertilizer significantly(p<0.05).As compared with chemical fertilizer treatment,organic-inorganic fertilizer combined application enhanced the soil carbon pool management index and availability of active carbon,mineralized carbon and increased by 15.37%-37.84%,1.77%-8.30%and 4.62%-29.78%,respectively.There was an extremely significant parabolic correlation between soil CPMI and the contents of the soil total organic carbon,active carbon,mineralized carbon and microbial biomass carbon.

关 键 词：长期定位施肥 红壤稻田 土壤碳库 

分 类 号：S15[农业科学—土壤学]