关键词: 生理特性, 生理特性

Abstract: In order to fertilize more reasonable in the orchard, study on the soil nutrition and its structure of soil profile in the main tropical fruits orchard in Zhangzhou by the method of the field investigation and indoor analysis. The results showed that: the layers of organic matter content on different soil profile were very obvious. The content was more than that of the control. The organic matter content on different soil layers of orchards profile was great difference. On the surface layer (0-20 cm) and subsurface (20-40 cm), the organic matter content was mostly in a low level in the longan and litchi orchard, but in a higher level in the pomelo, banana, citrus and loquat orchard. The layers of soluble phosphorus content of orchard soil were very obvious, which decreased with the deepening of the level of the soil profile. In addition to litchi orchard and germplasm nursery, the content of soluble phosphorus was higher on the other orchard surface and subsurface soil. The content of available phosphorus was in a low level in the longan and litchi orchard, but in a higher level in the pomelo, banana, citrus and loquat orchard. Soil management and fertilization could increase the content of alkaline hydrolytic nitrogen, which was in a very high state or a high level in most of the orchards. N/P ratio of soil in each profile layer was significantly lower than that of the control, and 0.08-0.28 times than control. To different profiles, the N/P ratio of surface and subsurface soil was generally less than that of subsoil. Tillage and fertilizer management could reduce soil N/P ratio.