目前，评价土壤中金属植物有效性的方法主要有：化学提取法、植物吸收试验、微生物和酶活性试验及同位素法。
The main methods now to evaluate Pb availability in soil are chemical extraction, plant adsorption, microbial and enzyme activation and isotopes tests.
本方法提取成本低，操作简便，酶活回收率高，因此具有应用价值。
The method possesses the practical value for its advantages of low production cost, simple operation and high enzyme recovery.
主要研究了麦芽根中5′—磷酸二酯酶的提取方法。
The methods of 5 '-phosphodiesterase extraction from malt root were studied in this paper.
应用推荐