摘要
试验研究了有机肥、亚铵造纸制浆黑液(SWUA)和化肥对砂壤质水稻土结构的影响。结果表明,施用有机肥的水稻土孔隙度、水稳性团聚体和持水能力等性状显著优于黑液处理和化肥处理;秸秆直接还田最有利于土壤结构改善;土壤毛管孔隙范围内水分最活跃孔径为0.05～0.10mm,其孔径孔隙度与土壤持水能力呈明显线性关系。
The effects of organic manure, straw-paper-pulping waste using ammonium sul-phite(SWUA) and·chemical fertilizer on the soil structure of sandy loamy paddy are studied. The results show that the soil porosity, water-stable aggregate and water-holding ability of organic manure treatments are significantly higher than those of other treatments among organic manure treatments,plant residue is the most favourable to improve soil structure,and the diameter of pore in which water can most actively move is 0.05-0.10mm among capil-lary. There is a significant linear relationship between the porosity 0.05-0.10mm in diame-ter and the water-holding capacity of soil.
出处
《生态农业研究》
CSCD
1998年第3期39-42,共4页
Chinese Journal of Eco-agriculture
基金
加拿大国际开发署援助河北旱地研究项目
关键词
植物残体
土壤结构
水稳性团聚体
Plant residue, Soil structure, Porosity, Aggregate stability, Water-holding ability
