硼是农作物生长发育所必需的营养素之一 ,由于需要量很小 ,在作物体内的含量仅占作物体干重的 0 .0 0 5% ,故又划属作物必需营养的微量元素之一。液体复混肥中硼的制备也正是基于此点 ,但配制时 ,相对呈高浓度状态 ,其量约≥ 2 .5g/ L ,使用时需成百倍稀释 ,以便植物吸收。由于 Boron is one of the nutrients necessary for the growth and development of crops. Due to the small requirement, the content of boron in crop plants accounts for only 0.050% of the dry weight of the crop, so it is also one of the trace elements required for crop nutrition. The preparation of boron in liquid compound fertilizer is just based on this point. However, when it is formulated, it is relatively high concentration state, its quantity is about ≥ 2.5g / L, when used, a hundredfold dilution is needed for the plant to absorb. due to