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试验对哈尔滨市7 个重点蔬菜产区共 59 个耕层土样进行分析有机质, 全氮、磷、钾、速效氮、磷、钾和有效硫的含量。结果表明: 菜园土壤有机质, 全氮、磷, 速效氮、磷和硫的含量高于相邻粮田。全钾和速效钾的含量与相邻粮田相比, 增加的幅度很小, 并有一半反而下降。粮田土壤的有效硫指数 ( S A I) 大部分属于低级。菜田土壤的 S A I大部分属于中级。
A total of 59 topsoil samples from 7 key vegetable producing areas of Harbin were analyzed for the contents of organic matter, total nitrogen, phosphorus, potassium, available nitrogen, phosphorus, potassium and available sulfur. The results showed that the contents of soil organic matter, total nitrogen, phosphorus, available nitrogen, phosphorus and sulfur in the vegetable garden were higher than those in the adjacent grain fields. Compared with the adjacent grain fields, the content of total potassium and available potassium increased only slightly and decreased by half. The effective sulfur index (S A I) in the grain fields is mostly low. S A I in vegetable soils mostly belongs to intermediate class.