摘要
在棕壤上（耕淀简育湿润淋溶土）连续８年长期定位试验，研究了裸地和覆膜条件下不同施肥处理时土壤有机质含量和品质的变化规律，结果表明：在本试验施肥水平条件下，有机肥和化肥单独施用和配合施用均可提高土壤有机质含量，覆膜各处理有机质含量增加程度均高于相应裸地各处理，无论覆膜与否，各施肥处理均提高土壤中易氧化有机质含量，提高易／总，降低Ｋａ，增加复合体有机质的含量、原土复含量和追加复合量、松结态腐殖质含量和松结态腐殖质中易氧化有机质和括性腐殖质含量，但覆膜后，各处理的增加程度均超过相应的裸地各处理。
The Changes of soil organic matter in quantity, quality, decomposition, accumulation and balance were studied at long-term located fertilization test in brown earth in Shenyang Agricultural Universtiy during 1987 - 1995. The results revealed that soil organic matter in topsoil has been improved after 8 years' continual fertilization.At the same time, the complex organic. matter, loosely combined humus (LH), readily oxidizable organic matter (ROOM), the complex quantity (QC%) and the complex quantity additional (QAC%) were also increased, as well as the ratios of ROOM to total organic mattr (OM), LH to stable combined humtus (SH)and LH to tightly combined humus (TH).
出处
《沈阳农业大学学报》
CAS
CSCD
1998年第1期59-64,共6页
Journal of Shenyang Agricultural University
基金
国家自然科学基金
关键词
土壤有机质
长期定位试验
施肥
栽培条件
soil organic matter
long-term field
located fertilization test
