硼是植物正常生长、发育、开花、结果所不可缺少的微量元素,缺少它,会使许多植物发生病害,如白薯的黄叶病,玉米的白条病,棉花的“蕾而不花”病,油菜的“花而不实”症,甜菜的腐心病,萝卜的褐心病等都是缺硼而造成。一般讲,植物缺硼症明显地发生在茎和根的顶端,即生长点上。缺硼首先使生长点死亡, Boron is a trace element that is indispensable to the normal growth, development and flowering of a plant. Without it, many diseases will occur in plants, such as the yellow leaf disease of sweet potatoes, the white streak disease of corn, the “bud instead of flower” disease of cotton, Rape “flower and not real” disease, sugar beet heart disease, radish brown heart disease are caused by lack of boron. In general, boron deficiency in plants occurs apparently at the top of stems and roots, ie at the point of growth. Boron deficiency first causes the growth point to die,