作物所必需的微量元素,有硼、锰、锌、钼、氯、钴及铁等多种。我省种植棉花以缺硼最为普遍。当棉株缺硼时,会引起“蕾而不花”、“花而不实”、“果而不大”。据九江、彭泽、都昌、瑞昌等县应用硼肥证明,硼对棉花的增产效果十分明显。 Trace elements necessary for crops, boron, manganese, zinc, molybdenum, chlorine, cobalt and iron and other species. Cotton planting in our province to boron the most common. When cotton plants lack of boron, it will cause “bud instead of flowers”, “flowers are not real” and “fruits are not big.” According to Jiujiang, Pengze, Duchang, Ruichang and other counties to use boron to prove that the effect of boron on cotton yield is very obvious.