摘要
198 3年 6月至 1997年 10月进行的水旱轮作下连续免耕并配合施用有机肥料的长期定位田间试验研究结果表明 ,长期免耕和施肥造成土壤养分的表层富集 ,0～ 5cm土层有机碳、全氮、速效氮含量显著增加 ,而 5～ 10cm和 10～ 2 0cm土层上述养分含量明显低于常规耕翻处理 ;免耕对土壤结构破坏少 ,使 0～ 2 0cm土层水稳性团粒结构增多 .综合各项肥力性状 ,不同施肥处理对提高土壤肥力的贡献为 :猪粪 >秸秆 >绿肥 >化肥 >不施肥 .
A field experiment from June 1983 to October 1997 was conducted to study the effect of long term no tillage and application of manure on soil fertility properties.The results showed that the contents of soil organic C, total N and available N in the treatment of fourteen consecutive year no tillage were all significantly higher in 0～5cm soil layer,while,lower in 5～10 and 10～20cm layers than in conventional tillage.The content of water stable aggregate in 0～20cm layer was increased in no tillage in that the soil structure was less destroyed.Based on various soil fertility properties,the contribution order of different fertilization treatments to soil fertility was as follows:pig manure>straw>green manure>chemical fertilizer>no fertilizer.
出处
《应用生态学报》
CAS
CSCD
2000年第4期549-552,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金重点资助项目!(39830 2 2 0 )
关键词
水旱轮作
免耕
有机肥料
土壤肥力
Rice/wheat rotation, No tillage, Organic manure, Soil fertility.
