试验证明,适量的硼素能促进油菜的生长发育,提高座花率,有一定的增产效果。硼肥用量低,增产不明显,用量高造成减产,严重的则引起硼素中毒症。近年来,我们通过电子显微镜观察不同施硼量对油菜叶肉细胞的变化影响,以探讨有利于油菜增产的最佳浓度。一、材料与方法样品取自盆栽油菜,供试品种为甘蓝型油菜81-23,供试土壤为沟干泥,基肥和追肥都用试剂级硫酸铵、磷酸二氢钙、硫酸钾,整个生育过程全部用无离子水灌溉。设五个处理:对照(喷无离子水)0.05%、0.1%、0.5%、1.0%硼砂水溶液作根外追肥。六次重复。第一次喷施硼肥后三天,取整株油菜,先用无离子水洗净,再将喷施不同浓度 Experiments show that the right amount of boron can promote the growth and development of rapeseed, increase the flowering rate, have a certain effect of increasing yield. Low dosage of boron fertilizer, increase yield is not obvious, resulting in high production reduced production, serious cause boron poisoning syndrome. In recent years, we observed by electron microscopy different amount of boron on the changes in leaf cells of rapeseed to explore the optimum concentration of rapeseed yield. I. Materials and Methods The samples were collected from potted rape. The tested cultivars were Brassica napus 81-23. The tested soil was ditch-dried mud. The basal and topdressing agents were all reagent-grade ammonium sulfate, monocalcium phosphate, potassium sulfate, The process of all non-ionic water irrigation. Set five treatment: control (spray without ionized water) 0.05%, 0.1%, 0.5%, 1.0% borax solution for root top dressing. Repeat six times. Three days after the first application of boron fertilizer, take the whole plant rape, first washed with ion-free water, and then sprayed at different concentrations