土壤2012，Vol.44Issue(5)：727-734,8.
长期施用猪粪对红壤酸度的改良效应
Effects of Long-term Application of Pig Manure on Ameliorating Acidity of Red Soil
摘要
Abstract
Acid soil infertility is a major factor that limits crop production in red soil regions of southern China. The effects of 9-year pig manure application on amelioration of acidity on red soil (Udic Ferralsols) was studied in field lysimeter experiment with maize monoculture under different application rates of manure, i.e. N 0, 150 and 600 kg/hm2 for CK, LM and HM treatment, respectively, and with lime addition 3 t/hm2 lime every 3 years based on N 600 kg/hm2 for HML treatment. The results showed that soil pH increased year by year with increment of 0.085 in HML while manure application did not influence pH in LM. The application of pig manure increased the contents of soil base cations, especially Ca2+, followed by Mg2+. With the increase of manure application rates, the exchangeable acidity of red soil, particularly exchangeable aluminum, was obviously reduced and aluminum toxicity was eliminated after 4-year manure application. Ulteriorly, lime addition increased soil pH and reduced exchangeable acidity in comparison with HM. The manure application increased significantly corn yield on red soil. The minimal amount of manure was Ca 162 kg/hm2, over which pig manure application would increase soil pH. Lime addition once in the early years under long-term manure application would eliminate acid soil infertility with the least investments in the shortest time due to the increase and stabilization of manure on soil pH.关键词
有机肥/红壤/酸度改良/盐基离子/交换性酸Key words
Pig manure, Red soil, Amelioration of soil acidity, Soil base cations. Exchangeable acidity分类
农业科技引用本文复制引用
龙光强,蒋瑀霁,孙波..长期施用猪粪对红壤酸度的改良效应[J].土壤,2012,44(5):727-734,8.基金项目
国家重点基础研究发展计划项目(2011CB100506)、国家科技支撑计划项目(2011BAD41B01)和中国科学院知识创新领域前沿项目(ISSASIP1109)资助. （2011CB100506）
