Suitability screening of soybean varieties at seedling stage under photovoltaic panels

• Published in: 浙江大学学报. 农业与生命科学版
• Main Authors: CHEN Kaijun, ZHANG Jishan, HAN Kefeng, LUO Huan, MA Qingxu, WU Lianghuan
• Format: Article
• Language: English
• Published: Zhejiang University Press 2023-08-01
• Subjects: solar energy; photovoltaic agriculture; photovoltaic panel framework; soybean
• Online Access: https://www.academax.com/doi/10.3785/j.issn.1008-9209.2023.02.212
• ISSN: 1008-9209; 2097-5155

In order to investigate the suitability of different soybean varieties at seedling stage under a photovoltaic environment, the suitability evaluation of 31 soybean varieties (mainly promoted varieties in Zhejiang Province) was conducted under photovoltaic panels in a solar greenhouse (taking no photovoltaic panels as a control), and the effects of photovoltaic shading on soybean seedling growth were analyzed. The adaptability of soybean varieties to photovoltaic environments was comprehensively evaluated by shade tolerance evaluation model and cluster analysis. After 30 days of transplantation, 20 morphological, physiological and biomass indexes of soybeans were measured, and the shade tolerance coefficient of each trait was calculated. Through principal component analysis, membership function method and cluster analysis, the multiple traits of soybeans were transformed into six new comprehensive and independent indexes with weights of 0.251, 0.229, 0.170, 0.138, 0.126, and 0.115. According to the comprehensive evaluation value (D value), 31 soybean varieties were divided into three types: 9 materials were highly suitable, and 12 materials were moderately suitable, and 10 materials were poorly suitable. The highly suitable varieties included Bayueba, Dongshanbaimadou, Lanxidaqingdou, Jiafenglüpidou, Shaxindou, Tefandou 1, Zhexian 9, Zhexian 12, and Zhechun 14. The study provides a theoretical reference and suitable varieties for ensuring soybean growth and yield under an agriculture-light complementary system.