应用生态学报2012，Vol.23Issue(1)：159-165,7.
旱地施有机肥对土壤有机质和水稳性团聚体的影响
Effects of organic manure application on dry land soil organic matter and water stable aggregates
摘要
Abstract
A four-year (2007-2010) field experiment was conducted to study the effects of applying different amounts (7500, 15000, and 22500 kg · hm-2 ) of organic manure on the organic matter content, aggregate particle size distribution, and aggregate stability in different soil layers in a continuously cropped maize field on the Weibei Dry Land, Shaanxi Province of Northwest China. In 0-20 cm soil layer, the organic matter content in treatment 22500 kg · hnT of organic manure was 4. l%-4.6% higher than that in treatment 7500 kg · hm-2 of organic manure (P<0.05) , and the organic matter content in treatments 15000 and 22500 kg · hm-2 of organic manure was 4. 6% -11.2% higher than that in CK (chemical fertilization) (P<0.05). In the fourth year (2010) of applying 7500 kg · hm-2 of organic manure, the organic matter content in 0—20 cm soil layer was 4. 7% -6. 3% higher than that of CK (P<0. 05 ). In 0-30 cm soil layer, all treatments with organic manure application had an increased amount of soil water stable aggregates (>5 mm) , and the amount of the aggregates increased significantly with the increasing application rate of organic manure. Applying organic manure increased the amount of soil water stable aggregates (>0. 25 mm) , aggregate mean mass diameter, and aggregate stability in 0-30 cm soil layer, as compared with CK, and these three indices increased significantly with increasing organic manure application rate.关键词
旱地/有机肥/春玉米/有机质/水稳性团聚体Key words
dry land/ organic fertilizer/ spring maize/ organic matter/ water stable aggregate分类
农业科技引用本文复制引用
王晓娟,贾志宽,梁连友,韩清芳,丁瑞霞,杨保平,崔荣美..旱地施有机肥对土壤有机质和水稳性团聚体的影响[J].应用生态学报,2012,23(1):159-165,7.基金项目
"十一五"国家科技支撑计划项目(2006BAD29B03)、"十二五"国家科技支撑计划项目(2011BAD29B09,2011AA1005A4)和陕西省科技创新项目(2010NKC-03,2011NXC01-16)资助. （2006BAD29B03）
