剑河县土壤养分状况研究

Soil Nutrient Status of Jianhe County

为明确贵州省剑河县土壤养分状况,科学补充营养元素,平衡作物营养,提高作物产量、质量,对剑河县12个乡镇采集土壤样本,测定土壤中pH值、有机质、全氮、速效磷、速效钾,并分析其分布状况。结果表明,剑河县土壤pH值平均值为5.05,土壤偏酸性,有机质平均值为39.11 g/kg,处于高等级,全氮为2.36 g/kg,为较高等级,有效磷平均值为18.24 mg/kg,为较高等级,速效钾平均值为98.11 mg/kg,为中等级,以有效磷、速效钾的变异系数最大,pH值的变异系数最小,为9.85%。为此,建议生产上要针对不同农作区的土壤养分状况,因地制宜的施肥。

To clear the soil nutrient status Jianhe County,Guizhou Province,science supplement nutrients,balanced crop nutrition,improve crop yields and quality of Jianhe County township collected 12 soil samples,determination of soil pH,organic matter,total nitrogen,available phosphorus,potassium,and analyze their distribution.The results showed that Jianhe County soil,pH,with an average of 5.05,slightly acidic soil,organic matter with an average of 39.11 g/kg,in grade,TN was 2.36 g/kg,to a higher level,an average of phosphorus 18.24 mg/kg,higher grade,potassium average of 98.11 mg/kg,as the level to phosphorus,potassium coefficient of variation of the maximum coefficient of variation,pH value of the minimum value of 9.85%.With production to soil nutrient status of different agricultural area,the proposed site-specific fertilization.