【摘要】 荒地的农业开发利用可以有效缓解当前耕地减少的现状,了解荒地开发后土壤质量状况具有重要的现实意义。以山东省西部平原区为研究区域,通过代表性地块取样分析并与第二次土壤普查对比,初步结论如下:耕层土壤各项物理性质有不同程度的改良,个别地块改良效果不明显;养分含量增加明显,但速效养分含量偏高,产量仍属中低产水平。更多还原

【Abstract】 The agricultural exploitation and utilization of unused land could effectively relieve the situation of cultivated land loss.So,it was important of studying soil quality change after the agricultural exploitation and utilization of unused land.In this paper,the soil properties change were researched in the west of Shandong Province through taking samples and comparing to the second soil general survey.The primary results were as follows:the physical characteristics of top soil improved at different degree except for few unobvious,soil nutrients content raised notable but the active nutrients changed overtop,yields was still at the medium and low degree.更多还原