硼是作物生长发育不可缺少的微量元素。在作物形成繁殖器官时尤为重要,此期缺硼会导致减产。一般认为花期是需硼的临界期。作用(一)对繁殖器官的影响:硼可加速花的发育,增加花粉数,促进花粉粒的萌发和花粉管的生长。雌蕊的含硼量较多,其中又以柱头和花柱中最多。缺硼会停止发育以致枯萎脱落,出现“花而不实”。(二)对种子或果实形成期的影响:缺硼时抑制转化酶活性,因而影响了糖和淀粉的积累和向果实 Boron is an indispensable trace element for crop growth and development. This is particularly important when crops form reproductive organs, and boron deficiency during this period will result in reduced production. Flowering is generally considered to be the critical period for boron. Effect (a) of the reproductive organs: boron can accelerate the development of flowers, increasing the number of pollen, pollen grains and promote the growth of pollen tube growth. Pistil contains more boron, which in turn the stigma and style in the most. Boron deficiency will stop the development so that withered off, there “flowers and not real.” (B) the impact of seed or fruit formation period: the lack of boron inhibition of invertase activity, thus affecting the accumulation of sugar and starch and fruit