安福县土壤养分现状调查及合理施肥对策研究

通过对安福县16个乡镇农田土壤养分调查分析,得出其养分现状。结果表明：安福县土壤pH值为5.00～5.21,偏酸性。各乡镇土壤中有机质含量、水解氮、有效磷含量范围分别为3.04～3.8%、172.66～246.72mg/kg、15.02～38.14mg/kg,根据土壤养分分级标准,均在3级以上,比较丰富,速效钾含量在48.18～139.31mg/kg范围内,属3-4级,含量较低。结合安福县土壤肥力基本状况,建议该县在农业生产过程中,注重农田合理施肥。尤其注意：通过合理耕作,增施有机肥,防止养分的侵蚀与淋失;注意平衡施肥,针对不同类型土壤应采用不同施肥方法。

ANALYSIS ON SOIL NUTRIENT STATUS IN ANFU COUNTY

The status of soil nutrient in Anfu County is generalized by analyzing the conditions of the soil in 16 towns.The results show that:The range of pH value of soil in Anfu County is from 5.00 to 5.21,with a little acidity.The contents of organic matter are 3.04% ～ 3.84%,hydrolytic nitrogen are 172.66 ～ 246.72 mg/kg,and effective phosphorus are 15.02 ～ 38.14 mg/kg,which are all abundant,ranking above grade 3 according to the standard of classification of soil nutrient;the contents of quick-acting potassium are 48.18～139.31 mg/kg,ranking from grade 3 to 4.In order to prevent the loss and erosion of soil nutrient,the amounts of organic fertilizers should be increased and different fertilizer should be used according to the soil types.