摘要
以长期定位施肥蔬菜保护地土壤为材料,研究不同施肥处理对土壤磷素在剖面上分布特征的 影响。结果表明:不同施肥处理土壤全磷和速效磷含量在剖面中均呈现随土层深度增加而减少的趋 势,而且在同一土层内,施有机肥各处理土壤速效磷含量高于不施有机肥各处理。在0-60cm土体内 施有机肥各处理土壤磷素活化系数明显高于对照和不施有机肥各处理。在土壤剖面中施肥各处理有 机磷含量均高于对照,配施有机肥处理也高于单施化肥处理。磷素在土壤中的积累和长期施用有机肥 是导致土壤磷素向下层移动的主要因素。
Effect of long-term located fertilization on spatial distribution characteristics of phosphorus in vegetable soil was studied. The results showed that the contents of total P and available P were all decreased with the depth increasing in soil profile and in the same soil layer, the content of available P in treatments with organic fertilizer was higher than in treatments with no organic fertilizer. Phosphorus activation coefficient and the content of organic P in treatments with organic fertilizer were significantly higher than in treatments with no fertilizer and no organic fertilizer in 0-60cm soil layer. Accumulating of phosphorus and long-term applying organic fertilizer were leading factors of making phosphorus move downward.
出处
《中国农学通报》
CSCD
2005年第12期209-212,276,共5页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目"设施蔬菜栽培土壤磷
钾平衡及其供肥特征研究"(30370972)辽宁省自然科学基金项目"蔬菜保护地磷素特征及其丰缺指标的研究"(20032078)
关键词
长期定位施肥
蔬菜保护地土壤
磷素
土壤剖面
Long-term located fertilization, Vegetable soil, Phosphorus, Soil profile
作者简介
陈新,女,1980年出生,在读硕士研究生,主要从事土壤肥力与土壤环境研究.通信地址：110161 辽宁省沈阳市沈阳农业大学64信箱.Tel：024-88493108,E-mail：chenxin19800428@126.com.
通讯作者：梁成华。
