不同施用量土壤改良剂对南方酸性土壤理化性状及白三叶生长的影响
Effects of Different Dosages of Soil Modifiers on Physical and Chemical Properties of Southern Acidic Soil and Growth of Trifolium repens
欧阳玲 1徐华勤 1杨知建1
作者信息
- 1. 湖南农业大学农学院,湖南长沙410128
- 折叠
摘要
[目的]针对南方土壤酸化问题,探讨不同施用量土壤改良剂对酸性土壤的改良效果及对白三叶生长的影响.[方法]以白三叶惠亚(Huia)为材料,选用脱硫石膏和生石灰组合作为土壤改良剂,通过大棚盆栽试验,研究其对白三叶生长特性及酸性土壤理化性状的影响.[结果]施用脱硫石膏和生石灰组合改良剂能够显著增加酸性土壤的pH,降低土壤容重,改善土壤结构,增加土壤团粒结构和孔隙度;同时可以不同程度地增加土壤有机质、速效磷、速效氮、速效钾等指标含量.[结论]脱硫石膏和生石灰组合改良剂能够显著改良酸性土壤,从而促进白三叶生长.
Abstract
[Objective] The effects of different dosages of soil modifiers on improvement of acidic soil and growth of Trifolium repens were discussed.[Method] With Trifolium repens Huia as material,choosing combination of lime and gypsum as soil modifier,through greenhouse pot experiment,effects on growth characteristics of Trifolium repens and acidic soil physicochemical properties were studied.[Result] The combination of lime and gypsum modifier could significantly increase pH value of acidic soil,reduce soil bulk density,improve soil structure,increase soil aggregate structure and porosity;at the same time,the modifier could increase soil organic matter,available phosphorus,available nitrogen,available potassium and other physical and chemical indicators.[Conclusion] The combination of lime and gypsum modifier can significantly improve the acidic soil,so as to promote the growth of Trifolium repens.
关键词
白三叶/脱硫石膏/生长特性/南方酸性红壤/土壤理化性质Key words
Trifolium repens/Desulfurization gypsum/Growth characteristics/Southern acidic red soil/Soil physical and chemical properties引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据