论文部分内容阅读
采用Mehlich 3法和常规分析方法测定赤红土和红土的有效磷、有效钾,结果表明,Mehlich 3法测得的有效磷、有效钾与常规方法测定的呈显著的相关。赤红土上的玉米生物试验结果表明:Mehilch 3法测定的土壤有效磷、有效钾含量与玉米吸收的磷、钾量以及玉米的株高、干重呈显著相关。
Mehlich 3 method and conventional analysis method were used to determine available phosphorus and available potassium in the laterite and laterite. The results showed that available phosphorus and available potassium measured by Mehlich 3 method were significantly correlated with those determined by routine methods. The results of maize bioassay on calcareous soil showed that available phosphorus and available potassium content measured by Mehilch 3 method were significantly correlated with phosphorus and potassium absorbed by maize and plant height and dry weight of maize.