Mehlich 3法测定黑土有效磷、钾的试验  

Study conditions of avalible P and K with Mehlich3 reagent in Black soil

作　　者：孟宪武[1] 孟庆峰[2] 姜宏志[2] 刁秋实 

机构地区：[1]黑龙江省山河屯林业局 [2]黑龙江省林业科学院 [3]黑龙江省林业科学研究所

出　　处：《林业勘查设计》2013年第3期36-38,共3页Forest Investigation Design

摘　　要：应用Mehlic3法测定黑土有效磷与有效钾含量。针对测定过程中的振荡时间和振荡速度对测定结果的影响分别进行试验。研究结果表明:振荡速度显著影响有效磷、钾的含量,即振荡速度逐渐升高有效磷、钾含量随之升高;振荡时间对测定结果无显著性差异;M3法测定有效磷值是Olsen法的2.40倍。M3法测定有效钾值是NH4OAC法的1.15倍。Determination of soil available phosphorus and available potassium content by Mehlic3 method. According to the determination of the oscillation of the process time and oscillation velocity influence on the results of determination were test. The results showed that： the content of available phosphorus, available potassium oscillation speed significantly influ- ence, The oscillation time on the determination results have no significant difference, shaking speed on determination re- suits of significant difference; Determination of available phosphorus in M3 value is 2.40 times the Olsen method. Determi- nation of available potassium M3 value is i. 15 times the NH4OAC method.

关 键 词：Mehlich3 黑土 有效磷 有效磷钾 

分 类 号：S816.17[农业科学—饲料科学]