土壤2016，Vol.48Issue(6)：1229-1236,8.DOI:10.13758/j.cnki.tr.2016.06.024
几种常用绿地改良材料对土壤水分特征的影响
Effects of Modified Materials Commonly Used on Green Belt on Soil Water Characteristic
摘要
Abstract
The analyses on water characteristic curves and water constants of soils made from several common modified materials with different ratios showed that RETC software well simulated the parameters of van Genuchten equation for water characteristic curves (allR2>0.99). Soil field water capacity reduced but soil water availability increased with the increase of sand content. Sand grain size influenced soil moisture constant insignificantly. The greenery waste increased soil field water capacity and available water content, but decreased wilting water content. The greenery waste increased the proportion of available water in field water capacity, which reached to highest (49.59%) in soils with 20% proportion of greenery waste. Although PAM increased soil field water capacity, it inhibited the release of soil water, thus reduced the effectiveness of soil water. In addition, desulfurization gypsum increased soil field water capacity and soil water effectiveness. In general, the best soil was composed with 70% soil, 10% sand, 20% greenery waste and 0.5 kg/m3 desulfurization gypsum in volume.关键词
RETC/水分特征曲线/水分常数/土壤改良材料Key words
RETC/Water characteristic curve/Water constant/Soil modified materials分类
农业科技引用本文复制引用
伍海兵,方海兰,李爱平..几种常用绿地改良材料对土壤水分特征的影响[J].土壤,2016,48(6):1229-1236,8.基金项目
上海辰山植物园专项项目(G102402)和上海市科委项目(14DZ0503200)资助。 （G102402）
