硼(B)元素是植物生长所必需的16种元素之一,它在多数植物干组织中平均含量为20ppm,以蛋白质为基准表示硼的含量,大约为20微克/克蛋白质。尽管至今植物对硼需要的临界量尚未能确定,但一般认为土壤中有效硼含量低于10ppm 时,果树就表现缺素症状。 The boron (B) element is one of the 16 elements essential for plant growth and has an average content of 20 ppm in most plant tissue tissues. The content of boron, based on the protein, is about 20 μg / g of protein. Although the critical mass of boron for plants so far has not yet been determined, it is generally accepted that fruit trees exhibit deficient symptoms when available boron is less than 10 ppm in the soil.