不同浓度腐殖酸对小白菜生长及生理特性的影响  

Effects of Different Concentrations of Humic Acid on Growth and Physiological Characteristics of Brassica rapa chinensis under Coconut Bran Substrate Cultivation

作　　者：邹佳彤 张正 徐伟洲 同家呈 冯志道 于卫洁 ZOU Jiatong;ZHANG Zheng;XU Weizhou;TONG Jiacheng;FENG Zhidao;YU Weijie(Key Laboratory of Ecological Restoration in Shaanxi North Mining Area,Yulin University,Yulin,Shaanxi 719000,China)

机构地区：[1]榆林学院陕西省陕北矿区生态修复重点实验室,陕西榆林719000

出　　处：《陕西农业科学》2024年第3期30-35,共6页Shaanxi Journal of Agricultural Sciences

基　　金：榆林市科技计划项目“矿区生态修复动态监控体系研究”(2018-2-49);陕西省教育厅重点项目“以气化渣为主要材料的绿植草毯制备及应用研究”(21JS050)。

摘　　要：本试验以“玲珑黄515”新型小白菜为试验材料,研究腐殖酸对小白菜生长发育与品质的影响。结果表明:椰糠基质栽培下,施用腐殖酸能不同程度地促进小白菜叶片和植株的生长,促进了株高和产量,增加了植株鲜重、植株干重和主根直径,提升了还原糖、可溶性蛋白及可溶性糖含量,从而有效提高产量和品质;采用隶属函数分析法得到腐殖酸不同浓度处理下小白菜生长和品质指标综合评分为:T2(0.78)>T1(0.68)>T3(0.50),因此,与T1和T3处理相比,T2处理对小白菜生长和品质指标促进作用更为明显,腐殖酸“最适”添加浓度为2.5%。本研究通过腐殖酸肥效试验结果,揭示其小白菜农艺性状和生理特征的影响,以期为推广腐植酸的使用和小白菜绿色高效生产提供一定的理论依据。A new cultivar of Brassica rapa chinensis,‘Linglonghuang 515’,was used as the experimental material to explore the effect of different concentrations of humic acid on its growth,development,and quality.The results showed that under the cultivation of coconut bran substrate,the application of humic acid exhibited varying degrees of enhancement on leaf and plant growth of Brassica rapa chinensis.It increased the plant height and yield,and promoted fresh and dry weight of plants,main root diameter,content of reducing sugar,soluble protein,and soluble sugar.These improvements effectively boosted both yield and quality.The results of membership function analysis showed that the overall scores of growth and quality indicators of Brassica rapa chinensis were highest for the T2 treatment(0.78),followed by T1(0.68)and T3(0.50).Thus,compared with T1 and T3 treatments,T2 treatment significantly enhanced the growth and quality indicators of Brassica rapa chinensis,with the optimal concentration of humic acid being 2.5%.Through the assessment of humic acid fertilizer efficiency,this study revealed its effect on agronomic traits and physiological characteristics of Brassica rapa chinensis,thereby providing a theoretical foundation for promoting the use of humic acid and green and efficient production of Brassica rapa chinensis.

关 键 词：腐殖酸 复合基质 生长指标 品质指标 

分 类 号：S147.22[农业科学—肥料学]