论文部分内容阅读
土壤中的磷素分析,是土壤普查农化分析的主要项目之一。根据《全国第二次土壤普查暂行技术规程》的规定,土壤全磷采用高氯酸——硫酸消煮,钼锑抗比色法测定,而江西各县、市的第二次土壤普查是沿袭传统的硫酸——高氯酸消煮,抗坏血酸还原比色法,问题在于两种比色法的分析结果是否一致?后一种的分析结果,对划分土壤全磷的等级作出评价时是否会产生影响?从而直接涉及到分析资料能否参加全国第二次土壤普查土壤全磷资料汇总的重要问题,为此,我们对上述两种比色法的分析结果进行t值测验、精密度考查、钼兰稳定时间等问题作了
Phosphorus analysis in soil is one of the major projects in soil analysis for agrochemical analysis. According to the “Provisional Technical Regulations of the Second National Soil Census”, soil total phosphorus is determined by perchloric acid-sulfuric acid digestion and molybdenum-antimony colorimetric method, while the second soil survey by Jiangxi counties and cities is followed The traditional sulfuric acid - perchloric acid digestion, ascorbic acid reduction colorimetric method, the problem is that the two colorimetric analysis of the results are consistent? The latter analysis, the classification of soil total phosphorus grade evaluation will produce Therefore, it is directly related to the analysis of the data to participate in the second soil survey of soil total phosphorus data summary of important issues, for which we analyze the results of the two colorimetric t value test, precision test, molybdenum Lan stable time and other issues made