Abstract
The research is done on the Huangguogan (unique citrus breed in Sichuan, China). The experiment setted 27 groups of "Baoshiling" (self-study compound fertilizer) fertilization treatment to explore the "Baoshiling" different combinations on soil physical and chemical properties of Huangguogan. The results showed that all the combinations had improved the soil of Huangguogan orchard. The combination of A3B2C2 had the best effect. The best Fertilization management measures was "Baoshiling" bud flowering fertilizer 2kg, stable fruit fertilizer 2kg, strong fruit fertilizer 2kg. It could reduce the pH of soil and the bulk density of soil, increase the available nitrogen, available phosphorus, available potassium and urease activity.
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