摘要
试验选择2块不同肥力的地块来研究冬小麦收获后硝态氮在1m土壤剖面中累积状况。研究结果表明:有机无机肥料配合使用能有效地降低硝态氮在土壤中的累积;硝态氮在肥力高的地块比在肥力低的地块累积量小;只有综合考虑施肥,灌溉等影响因子才能降低硝态氮在土壤中的累积。
We studied the nitrogen accumulation in the deep soil section of lm after the winter wheat were harvestel under the different fertilizer and irrigation conditions. The result showed： Application of manure and fertilizers could reduce the nitrogen accumulation. The higher of soil fertility, the more nitrogen was accumulated in soil. Both fertilizer and irrigation influenced the accumulation of nitrogen in the soil.
出处
《土壤通报》
CAS
CSCD
北大核心
2006年第2期278-281,共4页
Chinese Journal of Soil Science
基金
国家科技部科技攻关项目(2002BA516A12)
关键词
硝态氮
施肥
灌溉
土壤肥力
Nitrate nitrogen
Fertilization
Irrigation
Soil fertility
