安徽农业科学2025，Vol.53Issue(5)：18-22,5.DOI:10.3969/j.issn.0517-6611.2025.05.005
断根对菊芋光合特性的影响
Effects of Root Cutting on Photosynthetic Characteristics of Helianthus tuberosus L.
摘要
Abstract
Using Koerqin red-skinned Helianthus tuberosus L.as the experimental material,this study measured the tuber yield,photosynthet-ic characteristics,and SPAD values under different root-cutting radii(20,30,40,50 cm and uncut)during 2022-2023.The objective was to investigate the effects of root cutting on the production performance,photosynthetic characteristics,and SPAD values of Helianthus tuberosus L.,providing theoretical support for high-yield cultivation.The results showed that root cutting significantly increased tuber yield,with the highest yield observed at a 20 cm cutting radius.After root cutting,the photosynthetic characteristics and SPAD values of Helianthus tuberosus L.exhibited a decreasing trend as the cutting radius decreased,while water use efficiency showed a gradually increasing trend.There was a highly significant negative correlation between tuber yield and net photosynthetic rate,transpiration rate,intercellular CO2 concentration,stomatal conductance,and SPAD values.关键词
菊芋/块茎/产量/光合特性/SPAD值Key words
Helianthus tuberosus L./Tubers/Output/Photosynthetic characteristics/SPAD value分类
园艺学与植物营养学引用本文复制引用
李鑫,高凯,金迪,朱铁霞..断根对菊芋光合特性的影响[J].安徽农业科学,2025,53(5):18-22,5.基金项目
国家自然科学基金项目(31560672). （31560672）
