水土保持通报2016，Vol.36Issue(5)：40-45,6.DOI:10.13961/j.cnki.stbctb.2016.05.014
土壤结构改良剂对皖南旱地红壤水分特征的影响
Effects of Soil Amendments on Water Characteristics in Red Soil of Upland in South Anhui Province
摘要
Abstract
Objective] T he aim of this study is to investigate the effects of soil amendments on soil porosity , bulk density and water characteristics of upland at South Anhui Province ,in order to provide information for soil improvement ,water availability and anti‐drought .[Methods] Three different kinds of soil amendments including diatomite(Si) ,foamed sand(T20 ) and mineral amendment(G20 ) were used and 4 addition rates of 1% ,2% ,5% and 10% were adopted in the batch experiment .[Results] The addition of Si and T20 reduced soil bulk density significantly ,however ,the addition of G20 showed a significant effect only at the addition rate of 5% and 10% .Soil porosity increased from 52 .1% to 91 .3% by Si treatment ,which was better than T20 and G20 treatment .Soil moisture absorption coefficient and wilting moisture increased first and then decreased with the application amount of Si and T20 .In contrast ,soil moisture absorption coefficient and wil‐ting moisture increased linearly with the application amount of G20 .Soil saturation water capacity and field water capacity increased with the application amount of three amendments ,and the increase trend was largest by application of Si ,followed by T20 and G20 .In addition ,soil available water and hard available water increased with soil amendment addition rate .The treatment of Si on hard available water was better than T20 and G20 .[Conclusion] The water characteristics of upland soil of South Anhui Province should be improved according to the type and amount of soil amendment .In order to achieve an ideal effect ,the combination of various soil amendments should be taken into account .关键词
土壤结构改良剂/皖南旱地/土壤容重/孔隙度/土壤水分Key words
soil amendment/South Anhui Province upland/soil bulk density/soil porosity/soil water分类
农业科技引用本文复制引用
潘金华,庄舜尧,史学正,曹志洪,蔡宪杰,程森..土壤结构改良剂对皖南旱地红壤水分特征的影响[J].水土保持通报,2016,36(5):40-45,6.基金项目
沪皖现代烟草农业高科技示范园科技专项“皖南烟稻优质高效生态安全的土肥综合技术研究与示范” （）
