天津市不同种植年限蔬菜地土壤物理性质分析

Analysis of Soil Physical Properties for Vegetable Soil with Different Planting Years in Tianjin City

为了解不同种植年限蔬菜地土壤结构的变化,对天津市辛口镇蔬菜种植区种植5年、10年及15年以上的土壤物理性质及土壤水分参数进行比较分析。结果表明:随着种植年限延长,蔬菜地土壤呈逐渐酸化的趋势,蔬菜地土壤的容重变大,土壤结构性变差;随着种植年限的延长,蔬菜地土壤饱和含水量、田间持水量、有效水含量及萎蔫含水量呈现不同程度的下降,土壤水分的吸持性能和供释能力下降,土壤水分的开发及利用潜力逐渐降低。

Vegetable planting area in Xinkou town,Tianjin,was chosen as our study area.In this study,physical properties of three kinds of vegetable soil with different planting years,which including 5a,10a and 15a,were compared and analyzed.The results showed were as follow.As increasing of vegetable planting years,soil pH value was falling and soil bulk density was rising.It moaned that soil construction was worse to affect crop planting.Saturated water content,field capacity water content,available water content and wilting moisture of tested soil were performed as follows：5a10a15a.It showed that water holding and supplying ability of soil were reducing and it induced to worse of water using potential in soil.The results can provide references for water reasonable and effective using in Tianjin.