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一、土壤钾素含量状况 根据江苏省第二次土壤普查统计,土壤耕层速效钾平均为118mg/kg,大多数分布在50～150mg/kg之间,其中<50mg/kg占10％,50～100mg/kg占40％,100～150mg/kg占26％,>150mg/kg占24％。由此看出,>100mg/kg的土壤占50％,缺钾土壤面积较大。全省土壤速效钾含量苏北高出苏南50mg/kg,以苏北的连云港市土壤速效钾平均含最最高,为188mg/kg;苏南平均为92mg/kg,以苏南的镇江市最低,平均为79mg/kg。 第二次土壤普查先后建立起来的土壤监测点,国家级6个,省级132个,市级264个,县级198个,全省一共600个土壤监测点代表了86.8％的农作耕地
First, the status of soil potassium content According to the second soil survey of Jiangsu Province, soil available potassium average fasting 118mg / kg, most of the distribution in the 50 ~ 150mg / kg, of which <50mg / kg accounted for 10%, 50 40% for 100 mg / kg, 26% for 100-150 mg / kg and 24% for> 150 mg / kg. This shows that> 100mg / kg of soil accounted for 50%, potassium soil area larger. The available potassium content of soils in northern Jiangsu Province was 50 mg / kg higher than that of southern Jiangsu, with the highest content of available potassium in soil of Lianyungang City in northern Jiangsu being 188 mg / kg, the average being 92 mg / kg in southern Jiangsu and the lowest in Zhenjiang, southern Jiangsu With an average of 79 mg / kg. The second soil survey has established soil monitoring points, 6 at the national level, 132 at the provincial level, 264 at the municipal level and 198 at the county level. A total of 600 soil monitoring sites in the province represent 86.8% of the cultivated land under cultivation