黑土长期定位原状土搬迁对土壤腐殖质结合形态的影响  

Effect on Combined Forms of Soil Humus in Black Soil Under the Soil Removal on Long-term Fertilization Located Experiment

作　　者：匡恩俊[1] 迟凤琴[1] 宿庆瑞[1] 张久明[1] 蔡姗姗[1] 周宝库[1] 

机构地区：[1]黑龙江省农业科学院土壤肥料与环境资源研究所/黑龙江省土壤环境与植物营养重点实验室/黑龙江省肥料工程技术研究中心,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2015年第6期35-38,共4页Heilongjiang Agricultural Sciences

基　　金：国家自然科学基金资助项目(41171244);黑龙江省自然科学基金资助项目(ZD201113)

摘　　要：为了明确遭到环境和土体变化时土壤腐殖质的变化情况,调查了黑土长期定位试验站原状土搬迁前（2008年）和搬迁后（2013年）4个典型处理（马粪＋氮磷钾、马粪、氮磷钾、不施肥）的腐殖质结合形态的变化。结果表明：有机碳与重组碳呈极显著正相关,各处理间的规律表现为马粪＋氮磷钾〉氮磷钾〉马粪〉不施肥,搬迁前后规律一致。各处理的原土复合量高低顺序为马粪＋氮磷钾〉马粪〉氮磷钾〉不施肥;原土复合度高低顺序为马粪＋氮磷钾〈马粪〈氮磷钾〈不施肥。搬迁后各处理原土复合量和原土复合度均有降低的趋势,变化幅度以马粪＋氮磷钾处理最大。对比各处理搬迁前后松结态腐殖质相对含量变化不大,主要表现在稳结态腐殖质的降低和紧结态腐殖质的升高上,以马粪＋氮磷钾处理的变异幅度最小,为0.2%-2.5%,马粪处理的变异幅度次之4.5%-6.0%,不施肥处理变异幅度最大为10.5%-20.0%。说明长期合理施肥,特别是有机无机肥配合施用,不仅能够活化土壤腐殖质,同时,还能在土壤遭到环境及土体变化时,提升增加土壤对外界环境的缓冲能力。In order to ascertain the change of soil humus when the changes of environment and soil mass, the change of the contents of humus in black soil under the soil removal were studied on the basis of the soil removal of long-term located experiment field. The results showed that the content of soil organic carbon and organic carbon in heavy fraction had significantly positive correlation, and had the same trend before and after the soil removal, the trend of treatments was MNPK〉M〉 NPK〉CK. The soil complex amount of treatments was MNPK〉NPK〉M〉CK, soil complex degree was just the opposite trend. The soil complex amount and soil complex disagree was lower after soil removal. The form of soil humus mainly took on the decreasing of loosely combined humus and the increasing of tightly combined humus. The treatment of MNPK had the smallest variation of 0.2%-2.5% ,M treatment had smaller variation of 4.5%-6.0% ,the CK treatment of 10. 5%- 20.0 %. It showed that long term rational fertilization,especially organic and inorganic fertilizer could not only activate the soil humus,at the same time, increase the buffer capacity of itself when environment change.

关 键 词：土壤搬迁 黑土长期定位 结合态腐殖质 

分 类 号：S153.622[农业科学—土壤学]