膜际栽培条件下种植密度对黄芪光合指标和产量质量的影响
Effect of Planting Density on Photosynthetic Indexes and Yield Quality of Astragalus membranaceus Under Intermembrane Cultivation Conditions
毛端 1韩翠 2张雄 1叶庆忠 2魏骞 1纪晓玲1
作者信息
- 1. 榆林学院 生命科学学院,陕西 榆林 719000
- 2. 榆林市广济堂中药开发有限责任公司,陕西 榆林 719000
- 折叠
摘要
本研究以蒙古黄芪种苗为研究对象,采用随机区组试验设计,在膜际栽培技术下设置DM 为 158 731 株/hm2、ZM 为 185 278 株/hm2、GM 为 266 800 株/hm2,固定行距30 cm.采用灰色关联度法和相关性分析了蒙古黄芪根系指标、光合指标、产量和质量.结果表明:种植密度与根长、根鲜重及根干重显著正相关(P<0.05),与侧根数没有相关性;种植密度与叶绿素含量、蒸腾速率呈极显著正相关(P<0.01),与黄芪净光合速率、气孔导度、胞间CO2 浓度呈显著正相关(P<0.05);种植密度与根数呈极显著负相关(P<0.01),与产量呈极显著正相关(P<0.01).在ZM密度下,黄芪甲苷和毛蕊异黄酮葡萄糖苷含量均最高,经济效益最好,不同种植密度的等权关联度和加权关联度结果为ZM>GM>DM.综上所述,在膜际栽培条件下,ZM种植密度能够显著提高黄芪光合指标及产量质量构成因素.
Abstract
In this study,Mongolian Astragalus seedlings were planted in a randomized group experimental design with a fixed row spacing of 30 cm under the interfilm cultivation technique:158 731 plants/hm2 for DM,185 278 plants/hm2 for ZM and 266 800 plants/hm2 for GM.The root index,photosynthetic index,yield and quality of Mongolian Astragalus were analyzed using the gray correlation method and correlation.The results showed that planting density had a significant positive correlation(P<0.05)with root length,root fresh weight and root dry weight,but no correlation with lateral root number.Planting density had a highly significant positive correlation(P<0.01)with chlorophyll content and transpiration rate,and a significant positive correlation(P<0.05)with net photosynthetic rate,stomatal conductance and intercellular CO2 concentration of Astragalus.Planting density had a highly significant negative correlation(P<0.01)with rood number,but had positive cor-relation with yield(P<0.01).At ZM density,both Astragalus methyloside and mullein isoflavone glucoside contents were the highest,showing the the best economic efficiency.The equal-weighted correlation and weighted correlation results for different planting densities were ZM>GM>DM.In conclusion,ZM planting density un-der interfilm cultivation conditions significantly improves photosynthetic index and yield quality components of Astragalus.
关键词
黄芪/种植密度/光合指标/产量/质量/灰色关联度/相关性Key words
Astragalus/Planting density/Photosynthetic index/Yield/Quality/Gray correlation/Correlation引用本文复制引用
基金项目
中央引导地方科技发展基金陕西省工程技术研究中心项目(2022ZY2-GCZX-05)
陕西省农业农村厅科技创新驱动项目(2022NYT01)
榆林市科技局产学研合作项目(CXY-2021-83)
榆林学院研究生创新基金(2022YLYCX10)
出版年
2024
NETL
NSTL
万方数据