1、 Determination micronutrient boron for foliar fertilizer by indirect acid - base titration, overcome the inadequate of others method.
采用间接酸碱滴定法,测定叶面肥中的硼含量, 克服了其它方法的不足,试验结果满意,便于应用推广.
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2、 Selenium is the necessary micronutrient in the living process of human being and animals.
硒是人体和动物生命过程中必需的微量营养素.
来源:互联网
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