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通过田间采样和室内分析的方法,对浙东山地红壤丘陵区仙居县3 288个土壤样品进行检测分析,研究了该区域的土壤肥力特征,为制定合理的施肥方案,提供科学依据。结果表明:仙居县农田土壤普遍呈酸性,pH值为3.90～6.40;有机质含量为2.80～77.40g/kg,平均25.93g/kg,属于中等偏下水平,与第2次土壤普查数据(30.19g/kg)相比,有机质含量有一定程度的下降;土壤速效磷平均含量为49.24mg/kg,较第2次土壤普查(10.4mg/kg)提高了373.46%,有较大程度的提高。山区土壤有机质与速效磷和碱解氮含量均呈极显著的正相关关系,在山区农田增施有机肥,可以提高土壤中速效磷和碱解氮的含量。
Through field sampling and indoor analysis, 3 288 soil samples of Xianju County in the hilly red soil area of eastern Zhejiang were detected and analyzed. The characteristics of soil fertility in this area were studied, which provided a scientific basis for formulating a reasonable fertilization scheme. The results showed that the soil of farmland in Xianju County was generally acidic with the pH value of 3.90-6.40 and the content of organic matter of 2.80-77.40g / kg with an average of 25.93g / kg, belonging to the middle-lower level. Compared with the second soil survey data (30.19 Compared with the second soil survey (10.4mg / kg), the average content of available phosphorus was 49.24mg / kg, which was increased by 373.46%, which was improved to a great extent. Soil organic matter in mountainous area had a significantly significant positive correlation with available P and available N, and application of organic fertilizer in the farmland in mountainous area could increase contents of available P and available N in the soil.