孟凡乔, 李国学, 史雅娟. 常规与有机农作条件下土壤-植物系统磷素平衡及利用[J]. 中国生态农业学报(中英文), 2001, 9(1): 64-66.
引用本文: 孟凡乔, 李国学, 史雅娟. 常规与有机农作条件下土壤-植物系统磷素平衡及利用[J]. 中国生态农业学报(中英文), 2001, 9(1): 64-66.
MENG Fan-Qiao, LI Guo-Xue, SHI Ya-Juan. Balance and utilization of phosphorus in soil-plant system under conventional and organic farming condition[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 64-66.
Citation: MENG Fan-Qiao, LI Guo-Xue, SHI Ya-Juan. Balance and utilization of phosphorus in soil-plant system under conventional and organic farming condition[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 64-66.

常规与有机农作条件下土壤-植物系统磷素平衡及利用

Balance and utilization of phosphorus in soil-plant system under conventional and organic farming condition

  • 摘要: 分析了自然生态系统中P的形态、数量和循环方式,对常规和有机农作条件下土壤-植物系统P的来源、数量、输入、输出途径及特点进行了比较,并探讨了P的利用效率及影响因素。研究表明,有机农作方式下P投入水平低,输出与常规农作方式相当,系统表现为负平衡,但P的利用效率高于常规农作方式,对减少P素的负效应具有重要的环境意义。

     

    Abstract: The P forms,quantity and cycle approaches in natural ecosystem are summarized, and its sources, quantity,input and output approaches under conventional and organic farming condition are compared.Utilization efficiency of P and influencing factors are also analyzed. The research indicates that in organic farming system,there exists negative P balance because the input of P is lower and the output of P is nearly the same as conventional farming system,but the using efficiency of P is higher than that of conventional farming system. This makes a great significance for the positive environmental effect of P.

     

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