摘要
砂金开采对土壤肥力产生严重影响。主要表现为:土壤剖面构造破坏,底部生土上翻,耕层养分损失较大,土壤肥力下降,农作物产量锐减。研究结果表明:在砂金开采中实行土壤分层剥离,表土单独堆放,保表复垦是矿区农田复垦中保持土壤肥力的关键,同时,建立人工犁底层是南方砂金矿区水稻土复垦中一个重要技术措施。
The serious effcts of sand gold mining on soil fertility were reported in this paper. These effects include:thestructure of soil section was broken,gravel and bottom soil were reversed to surface soil,the nutrients of top tillingsoil lost seriously,the soil fertility and crop yield decreased. With the above results,the authors suggestd that thekeys of soil fertility conservation in soil reclamation should be to come off soil layer by layer and to place the topsoilalonely in sand gold mining. The heart of the matter is to carry on artificial plough in paddy soil reclamation in thesand gold mine region of south China
出处
《水土保持通报》
CSCD
北大核心
1993年第4期30-34,共5页
Bulletin of Soil and Water Conservation
关键词
土壤肥力
砂金
开采
矿床
sand gold mining
soil fertility
soil reclamation techniques
