摘要
通过在红壤坡耕地上营建不同抗旱措施,以顺坡耕作为对照,研究梯田、柱孔和坑穴3种抗旱措施对土壤养分的影响。结果表明:坑穴措施对土壤有机质、全氮和全磷的改良效果优于柱孔和梯田,而柱孔对土壤全钾的改良效果最好,与顺坡耕作相比,梯田没有提高土壤的全磷质量分数;坑穴改良碱解氮和速效磷的能力高于柱孔,而速效钾则相反,坡耕地改为梯田形式后,提高了有效磷质量分数,碱解氮和有效钾的质量分数却在降低。
Different drought-resisting measures were adopted in red soil sloping field. In this paper, downslope farming is taken as CK and the influence of different drought-resisting measure, i. e., terraces, pit and pin hole, on nutrient were analyzed. The results showed that pit had the better effect on soil organic matters, total nitrogen and total phosphorus than pin hole and terrace. Pin hole was the best in improving the mass fraction of total potassium. Compared with downslope farming, terrace did not improve soil total phosphorus mass fraction. Pit on the improvement of available nitrogen and available phosphorus capacity was better than the pin hole and the available potassium contrary. Terrace increased the mass fraction of available phosphorus, available nitrogen and potassium mass fraction decreased.
出处
《中国水土保持科学》
CSCD
2013年第4期49-52,共4页
Science of Soil and Water Conservation
基金
江西省水利厅科技计划项目"土壤水库营建条件下红壤坡耕地抗旱措施研究"(200922)
国家自然科学基金"生态恢复对红壤严重侵蚀地土壤水库重建的影响与机制"(1160179)
江西省教育厅青年基金项目"土壤水库营建后红壤坡耕地水肥耦合效应研究"(GJJ13749)
南昌工程学院青年基金"森林生态系统中土壤和植被对氮饱和的响应"(2006KJ010)
关键词
坡耕地
养分
土壤水库
sloping field
nutrient
soil reservoir
