硼是农作物必需的微量元素之一,早在半个世纪以前,硼对于某些作物的良好作用已被肯定。浙江省从1961年开始对黄岩植桔土壤的含硼量进行了研究,证明喷施硼酸肥料能增加柑桔的着果率。此后,在油菜生产中又发现“花而不实”的现象与缺硼有关。1974年浙江省油菜大面积“花而不实”,严重影响产量,引起了广泛的重视,经有关单位试验后, Boron is one of the essential trace elements for crops, and as early as half a century ago, the good effect of boron on certain crops has been confirmed. Since 1961, Zhejiang Province has studied the boron content in the soil of Huangyan orange planting, and proved that the application of boric acid fertilizer can increase the fruit yield of citrus. Since then, it has been found in the rapeseed production that the phenomenon of “blossoming but not real” is related to boron deficiency. In 1974, the large area of ​​rapeseed in Zhejiang Province was “not fluent in flowers”, which seriously affected output and aroused widespread attention. After being tested by the relevant units,