微量元素是指土壤中含量很低,而对作物的正常生育却是不可缺少的营养元素,如硼、锌、钼、锰、铜、铁等。根据国内外研究资料记载,硼对植物的特殊生理作用表现在根上。以形态解剖的显微观察,缺硼植物根系细胞分化和延长受到影响,根尖细胞木质化;而且硼对碳水化合物的运转也起重要作用,缺硼时植物体内碳水化合物的代谢发生混乱,叶内有大量化合物累积,影响生殖器官的形成,花药和花丝萎缩,如油菜的“花而不实”,棉花的 Trace elements are very low levels of nutrients in the soil, but they are indispensable to the normal fertility of crops, such as boron, zinc, molybdenum, manganese, copper and iron. According to domestic and foreign research data records, boron on the plant’s special physiological role in the root performance. Morphological and anatomical microscopic observations, lack of boron plant root cell differentiation and extension are affected, root tip cells lignification; and boron on the carbohydrate operation also plays an important role in the lack of boron plant carbohydrate metabolism chaos, leaves There are a large number of compound accumulation, affecting the formation of reproductive organs, anthers and filaments atrophy, such as rape “flower and not real”, cotton