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Effect of Organic and Chemical Fertilizers on Growth and Quality of Three Vegetables Cultivated with
Effective application of organic fertilizers for sustainable agriculture will be useful to reduce the use of chemical fe......
在酸性条件下,用二阶导数及零交技术,取223.5nm处的导数值可消除水中常见离子的干扰。该法的线性范围为0-130μg-50ml,检出限为0.08μg.ml^-1,加标回收率在95%-101%之间,适用于......