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中国农学通报 ›› 2005, Vol. 21 ›› Issue (12): 209-209.

所属专题: 园艺

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长期定位施肥对蔬菜保护地土壤磷素空间分布的影响

陈 新,梁成华,张恩平,杜立宇,李延东   

  • 出版日期:2005-12-05 发布日期:2005-12-05

Effect of Long-term Located Fertilization on Spatial Distribution Characteristics of Phosphorus in Vegetable Soil

Chen Xin, Liang Chenghua, Zhang Enping, Du Liyu, Li Yandong   

  • Online:2005-12-05 Published:2005-12-05

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。

Abstract: 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.