摘要
以吉林省中部玉米带黑土为供试土壤,研究了黑土不同剖面构型的结构特性。结果表明:不同耕作条件下,大于0.25 mm水稳性团聚体的含量差异较大。“平面型”犁底层剖面构造有利于改善土壤结构。相关分析表明,大于0.25 mm的水稳性团聚体含量与土壤有机质含量及作物产量呈显著相关,相关系数分别为0.860和0.703。
Construction properties of different soil profile constitutions in black soil of corn belt in Jilin were systemically studied. The results showed there are great differences in content of water-stable aggregates （ 〉 0.25 mm） under different tillages. The plow pan profile constitution of the “fiat type” helps to improve soil structure. Correlative analysis indicated content of soil water-stable aggregates （ 〉 0.25 mm） is in high correlation with content of organic matter of soil and yield of corns, and their correlative coefficients are 0. 860 and 0.703 respectively.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2005年第6期658-662,674,共6页
Journal of Jilin Agricultural University
基金
国家自然科学基金资助项目(3037846)
关键词
耕作
土壤结构性
团聚体
黑土
tillage
soil construction property
aggregate
black soil
