The permeability of soil showed downtrend along with the periodoftillage prolonged during the whole infiltration process.
在整个入渗过程中，土壤水分入渗性能随着开垦年限的延长呈下降趋势。
2
The effects of various tillage practices on soil properties, soil water status and sugarcane growth in seedling period were investigated in this paper.
研究了不同耕作方式对土壤物理特性、水分状况、甘蔗苗期生长的影响。
3
The organic carbon content in each organic-mineral complex oftillage layer is decreasing obviously with tillage period increasing, and that also has a decreasing trend in below plough layer.