摘要
土壤侵蚀严重地影响土壤物理和化学性质,限制了作物生产;它对作物生产具有长期和短期效应,短期效应通过施肥和培肥土壤等措施可得到恢复,而长期效应在较短时间内很难得到弥补。土壤氮素随径流流失不仅造成土壤肥力退化,而且对人类生存的自然环境造成危害。
Soil erosion seriously influences soil physical and chemical properties, and further limits crop production. Its impact on soil properties includes the long-term and the short-term effects. Soil erosion and nutrient loss directly result in soil fertility degeneration, and also seriously threaten the natural environment.
出处
《土壤与环境》
CSCD
2000年第3期249-252,共4页
Soil and Environmental Sciences
基金
国家自然科学基金!(49871049)
中国科学院重大科研项目!(KZ951-211)