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我市果园多为棕壤。据第二次土壤普查,烟台市(包括威海市)棕壤土面积为1310887hm~2,占土地总面积的79.91％,耕地面积为670336hm~2,占耕地总面积的75.45％。因此,棕壤是我市果园的主要土壤类型。棕壤在成土卜过程中的特点主要是有强烈的淋溶淀积作用,表现为土壤风化过程中所产生的钙、镁、钾、钠等盐基被淋失,土壤反应呈酸性至微酸性,盐基不饱和。因此,在该类土壤上种植苹果往往存在着交换性钙不足的问题,同其它土类相比,苹果苦痘病、痘斑病、水心病等缺钙生理
Orchard in our city mostly brown soil. According to the second soil survey, the area of brown soil in Yantai (including Weihai) is 1310887hm ~ 2, accounting for 79.91% of the total area of the land. The cultivated area is 670336hm ~ 2, accounting for 75.45% of the total area of cultivated land. Therefore, brown soil is the main type of soil in our city’s orchard. The characteristics of brown soil in the process of earth formation are mainly the strong leaching and deposition. The results show that the base of calcium, magnesium, potassium and sodium generated in the process of soil weathering is leached, and the soil reaction is acidic to micro Acid, salt-based unsaturated. Therefore, the cultivation of apples in this type of soil often has the problem of insufficient exchangeable calcium. Compared with other soil types, apples such as bitter pit disease, chicken pox disease and water heart disease