论文部分内容阅读
微量元素肥料,简称微肥。土壤和植物中微量元素含量很少,但它是植物的维生素,既不可缺少,又不能用别的元素代替。当土壤缺乏某种微量元素时,只要施用少量,对作物的效果就非常显著。目前世界上已有20多个国家广泛施用微肥。我国研究试用微肥也有20多年历史,1978年已把微肥列为新技术推广项目之一,现已成批生产硼、锌、钼、铜、锰、铁6种元素14个品种的微肥,年产4700多吨,在20多个省(区)、市
Trace element fertilizer, referred to as fertilizer. Soil and plant trace elements content is very small, but it is the plant’s vitamins, both essential and can not be replaced by other elements. When the soil lacks a trace element, the effect on the crop is very significant as long as a small amount is applied. At present, more than 20 countries in the world have used micronutrient fertilizer extensively. Fertilizer research in our country also has a history of more than 20 years. In 1978, micro-fertilizer has been listed as one of the new technology promotion projects. Now it has produced 19 varieties of micro-fertilizers of six kinds of elements, namely boron, zinc, molybdenum, copper, manganese and iron With an annual output of more than 4,700 tons in more than 20 provinces (autonomous regions and municipalities