摘要： 通过对北京市通州区徐辛庄镇土壤剖面水分的研究,得到了京郊平原区粮田的土壤水分垂直变异特征为各层间的变异表现出明显的层次性;土壤水分随着深度的变化呈曲线形式,但随着表层土壤水分的减少,其随着深度的变化近乎于直线;土壤水分因土壤质地的不同及土体构型的不同而存在着差异.在研究土壤水分垂直变异规律的基础上对不同土层的土壤水分进行了模拟预测.

关键词: 土壤水分, 垂直变异规律, 模拟预测

Abstract: In this article , the vertical variable patterns of soil w ater of field in Beijing suburbs are studied .Soil w ater is significantly different in different layers .It changes w ith the depth no nlinearly , but does nearly linearly as the content of soil w ater decreases .It also changes wi th the texture of soil and with the st ructure of soil .On the basis of the study , the soil w ater of different layers for the decisions of ef fective soil w ater management can be accurately predicted .

Key words: Soil w ater , Vert ical variable patterns , Imi tation prediction

中图分类号: 

• S152.7