【摘要】 经五年定位试验,深松与浅松的耕作法,土壤只受疏松而不翻动,与传统的耕翻方法比较,土壤物理性状中容重、孔隙度状况发生变化,蓄水能力提高,土壤微团聚体含量增加,表层土壤有效性磷、钾含量有增高的趋势。更多还原

【Abstract】 This paper deals with the effects on the physical and chemical characters of the soil in deep loosening and low loosening method—the soil being loosened and not overturned. After five years experiments in the fixed area, it was found that the following changes took place compared with the traditional ploughing method, the alteration of the soil physical characters including the conditions of apparent density and porosity; the improvement of water storing ability; the content of micro-aggregate in the soil as well tas the raising tendence of the effectitive phosphorus and potassium in he top soil.更多还原