山梨醇螯合硼肥对阔叶箬竹叶片韧性的影响  

The effect of sorbitol chelated boron fertilizer on the leaf toughness of Indocalamus latifolius

作　　者：彭超 涂佳[1] 刘思思[1] 肖静晶 何铸隽 刘飞而 周英国 袁果 李利华 PENG Chao;TU Jia;LIU Sisi;XIAO Jingjing;HE Zhujun;LIU Feier;ZHOU Yingguo;YUAN Guo;LI Lihua(Hunan Academy of Forestry,Changsha 410004,Hunan,China;Hunan Xiangqingyuan Agricultural Development Co.,Ltd.,Changsha 410301,Hunan,China;Yuanguo Pharmaceutical Co.,Ltd.,Changde 415700,Hunan,China;Yuanmeng Authentic Chinese Medicinal Material Planting Cooperative,Changde 415700,Hunan,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]湖南湘情原农业发展有限公司,湖南长沙410301 [3]湖南省袁果药业有限公司,湖南常德415700 [4]圆梦道地中药材种植专业合作社,湖南常德415700

出　　处：《湖南林业科技》2025年第1期60-65,共6页Hunan Forestry Science & Technology

基　　金：科技特派员服务乡村振兴项目(2024RC8133);中央财政林业科技推广示范项目(2023XT26)。

摘　　要：通过对不同硼酸质量浓度的山梨醇螯合硼肥处理(0.2、0.5、1.0 g·L^(-1))与对照组(未施肥)进行对比分析,旨在探讨山梨醇螯合硼肥对阔叶箬竹叶片韧性及相关生理特性的影响。结果表明:硼酸质量浓度为0.5 g·L^(-1)的山梨醇螯合硼肥(T4处理)对阔叶箬竹叶片的抗拉伸强度和断裂强度具有显著促进作用,抗拉伸强度为(45±4)N·mm^(-2),断裂强度为(40±4)N·mm^(-2),显著高于对照组(T1处理)[(20±2)N·mm^(-2)和(15±2)N·mm^(-2)]。此外,硼酸质量浓度为0.5 g·L^(-1)的螯合硼肥还显著增强了细胞壁的果胶和纤维素含量,分别为(16.8±1.5)mg·g^(-1)和(145±7)mg·g^(-1),表明该浓度对细胞壁成分的合成促进作用最佳。硼酸质量浓度为0.5 g·L^(-1)的螯合硼肥可有效增强细胞膜的稳定性,电解质渗漏率降至10.0%,丙二醛(MDA)含量降至3.0 nmol·g^(-1),均为最低值,表明细胞膜稳定性最优。抗氧化酶活性方面,硼酸质量浓度为0.5 g·L^(-1)的山梨醇螯合硼肥显著提高了SOD、CAT和APX的活性,SOD活性达到(70.0±4.5)U·mg^(-1),CAT活性为(22.0±1.8)U·mg^(-1),APX活性为(15.0±1.2)U·mg^(-1),均显著高于其他处理组。硼酸质量浓度为0.5 g·L^(-1)的山梨醇螯合硼肥能够显著提升阔叶箬竹叶片的韧性、细胞壁成分含量、细胞膜稳定性及抗氧化能力,显示出最佳的促进效果,而过高浓度(硼酸质量浓度为1.0 g·L^(-1))反而对部分生理指标产生抑制作用。This study aims to explore the effects of sorbitol chelated boron fertilizer on the toughness and related physiological characteristics of Indocalamus latifolius leaves.I.latifolius leaves were treated with different concentrations of sorbitol chelated boron fertilizer(the mass concentration boric acid is 0.2,0.5,1.0 g·L^(-1))and compared with a control group(no fertilizer).The results showed that the the mass concentration of the boric acid is 0.5 g·L^(-1)sorbitol chelated boron fertilizer(T4 treatment)significantly improved the tensile strength and fracture strength of I.latifolius leaves,with tensile strength of(45±4)N·mm^(-2) and fracture strength of(40±4)N·mm^(-2),which were significantly higher than the control group(T1 treatment)[(20±2)N·mm^(-2) and(15±2)N·mm^(-2)].A dditionally,the mass concentration of boric acid is 0.5 g·L^(-1)chelated boron fertilizer significantly increased the pectin and cellulose content in the cell wall,which were(16.8±1.5)mg·g^(-1) and(145±7)mg·g^(-1),respectively,indicating the best promotion of cell wall component synthesis at this concentration.Further analysis revealed that the mass concentration of boric acid is 0.5 g·L^(-1)concentration of chelated boron fertilizer effectively enhanced the stability of the cell membrane,reducing the electrolyte leakage rate to 10.0%and the malondialdehyde(MDA)content to 3.0 nmol·g^(-1),both of which were the lowest,indicating optimal cell membrane stability.In terms of antioxidant enzyme activity,the mass concentration of boric acid is 0.5 g·L^(-1)chelated boron fertilizer significantly improved the activity of SOD,CAT,and APX,with SOD activity reaching(70.0±4.5)U·mg^(-1) protein,CAT activity at(22.0±1.8)U·mg^(-1) protein,and APX activity at(15.0±1.2)U·mg^(-1) protein,all significantly higher than the other treatment groups.The mass concentration of boric acid is 0.5 g·L^(-1)sorbitol chelated boron fertilizer significantly enhanced the toughness,cell wall component content,cell membrane stability,and antioxidant capa

关 键 词：山梨醇螯合硼肥 阔叶箬竹 叶片韧性 

分 类 号：S795.9[农业科学—林木遗传育种]