不同种植年限设施土壤容重与孔性分析

目的]对不同种植年限对设施土壤耕作层容重及孔度进行研究。方法]利用＂S＂形布点采样法采集不同土层深度土样,并测定土壤容重、总孔度、毛管孔度、通气孔度等指标。结果]随着使用年限的增加,设施内不同深度土壤的容重随着种植年限的增加呈现下降趋势,总孔度呈现上升趋势,毛管孔度的变化幅度不是很大。不同采样时间对设施土壤耕层土壤容重和孔度数值变化影响不大。结论]为改善设施蔬菜作物生长环境提供依据。

Analysis about the Volume-Weight and Porosity of the Facilities Soil with Different Period of Planting

s Objectine]The aim was to study about the volume-weight and porosity of the facilities soil in the different plough horizon.Method]Soil samples of different soil depths were collected by using "S"-type distribution sampling method,and indexes such as volume-weight of soil,gross hole-character,porosity of hollow billet,vent degree and so on were determined.Result] The results showed that the volume-weight of the facilities soil with different depth would be downtrend and the gross hole-character of the facilities soil would be uptrend with the plant-age increasing,but the porosity of hollow billet would have few change range.Different sampling time had little influence on the variation of number about volume-weight and porosity of the facilities soil in the different plough horizon.Conclusion]The study provided a reference for improving growth environment of vegetable crops.