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微量元素是指土壤中含量很低的化学元素,一般为百万分之几到十万分之几,目前研究和使用得较多的微量元素主要有硼、钼、锌、锰、铁、铜等六种。这些微量元素,正象人体需要的各种维生素一样,是作物生长发育必不可少和不能相互替换的。土壤中如果缺乏这些元素,作物就会出现缺素症,导致产量减少,质量降低,严重的甚至失收。但微量元素过多也不行。因这类元素过多不仅对作物有毒害作用,而且还会引起其他
Trace elements are chemical elements with very low contents in soil, generally in the range of a few thousandths to a few hundred thousandths. At present, trace elements mainly studied and used mainly include boron, molybdenum, zinc, manganese, iron, copper Six kinds of other. These trace elements, just like the various vitamins needed by the human body, are indispensable and irreplaceable for crop growth and development. In the absence of these elements in soils, there is a shortage of crops in crops, leading to reduced yields, reduced quality, serious or even lost harvest. But too much trace elements do not work. Because of this element is too much not only toxic to crops, but also cause other