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以沈阳农业大学蔬菜保护地长期定位试验为基础,通过田间试验和室内分析系统的研究了长期定位条件下,不同施肥处理对蔬菜保护地土壤无机磷组分的影响。结果表明,各不同施肥处理土壤无机磷组分均以Ca-P为主,其中又以Ca10-P占绝对优势。不同组分的无机磷之间处于一个动态平衡过程,它们之间存在着一定程度的影响和制约关系,其中Ca2-P、Fe-P是速效磷的主要来源。
Based on the long-term experiment of vegetable reserve in Shenyang Agricultural University, the effects of different fertilization treatments on inorganic phosphorus fractions in vegetable soils under long-term positioning were studied by field experiment and laboratory analysis system. The results showed that the contents of inorganic phosphorus in the soils under different fertilization treatments were mainly Ca-P, among which Ca10-P accounted for the absolute superiority. The inorganic phosphorus in different components is in a dynamic equilibrium process, and there is a certain degree of influence and restriction between them. Ca2-P and Fe-P are the main sources of available phosphorus.