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作 者 ：刘建玲1;张福锁2;杨奋翮3

期 刊 ：植物营养与肥料学报 2000年 6卷 2期 页码：179-186

关键词：耕地；蔬菜保护地；土壤磷素；空间分布特性；

Keywords:cultivated land, vegetable soil, fractions of phosphorus, space distribution of P,

摘 要 ：以北方一般耕地和蔬菜保护地为供试土壤 ,研究了不同种植条件下土壤磷素状况 ,蔬菜保护地土壤磷素的空间分布特性。结果表明 ,蔬菜保护地土壤全磷、无机磷、有机磷、Olsen-P的平均含量是一般耕地土壤的 2.7～14.0倍 ,土壤Olsen P占全磷的比率 ,Ca₂-P ,Ca₈-P ,Al-P占土壤无机磷的比率显著高于一般耕地土壤。蔬菜保护地土壤各形态磷素主要积累在 0～20cm土层 ,并随土层深度的增加各形态磷素的含量逐渐降低 ,各土层Olsen-P ,Ca₂-P ,Ca₈-P ,Al-P含量降低幅度明显高于Fe-P ,O-P ,Ca₁₀-P含量的降低值

Abstract:Fractions of phosphorus in cultivated and vegetable soil in northern China was studied. The main results showed that the content of total P,inorganic P, organic P in vegetable soil was 2.7～14.0 times as much as in cultivated soil.The percent of Olsen-P to total P and Ca₂-P Ca₈-P, Al-P, Fe-P to inorganic P was higher in vegetable soil than in cultivated soil. The contend of Olsen-P,Ca₂-P, Ca₈-P, Al-P in the profile of 20～40cm,40～60cm, 60～100cm soil were accounting for 34.6%, 15.3%, 10.7% of the depth of 0～20cm soil, respectively. The contents of total phosphorus and inorganic phosphorus in the profile of 20～40cm,40～60cm, 60～100cm soil were accounting for 44.0%, 30.4%, 23.6%. The positive correlation coefficient was indicated that Olsen-P was correlated significantly to total P, inorganic-P,organic-P,Ca₂-P, Ca₈-P, Al-P, Fe-P.

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