西北农业学报2025，Vol.34Issue(8)：1408-1418,11.DOI:10.7606/j.issn.1004-1389.2025.08.005
黄芪秸秆基质对马铃薯原原种光合特征和产量的影响
Effects of Astragalus membranaceus Straw Substrate on Photosynthetic Characteristics and Minituber Yield
摘要
Abstract
This study aimed to explore the optimal ratio of Astragalus membranaceus straw substrate suitable for the growth and development of potato virus-free seedlings,and to provide a theoretical ba-sis for the application of A.membranaceus straw substrate as a new substrate material in the produc-tion of minitubers.The mixture of A.membranaceus straw,coconut bran,vermiculite and peat was prepared in different proportions to investigate the effects of different substrate ratios on the morpho-logical characteristics,photosynthesis,yield and economic benefits of potato virus-free seedlings.The results showed that among 11 mixed substrates,the substrate designated as HT7(30％Astragalus membranaceus straw+30％peat+40％coconut husk)exhibited outstanding comprehensive per-formance for potato virus-free seedlings.Its plant height,stem diameter,and root length were higher than those of the traditional control substrates CK1(100％vermiculite)and CK2(100％coconut husk)throughout the whole growth period,with significant differences in stem diameter and root length compared to CK1 and CK2.The relative chlorophyll content,net photosynthetic rate and stoma-tal conductance were significantly higher than those of CK1 and CK2 throughout the whole growth pe-riod.The average number of tubers per plant of potato virus-free seedlings was 3.16％lower than that of CK1 and 2.24％more than that of CK2.The average average weight per tuber was 23.21％greater than that of CK1 and 21.64％greater than that of CK2.The number of marketable tubers was 10.73％higher than that of CK1 and 25.47％higher than that of CK2.The economic benefit increased by 10.02％compared to CK1 and 40.83％compared to CK2.Using the comprehensive score method of membership function,the HT7 substrate obtained the highest score(0.97)among all mixed sub-strates.In conclusion,HT7 substrate effectively promotes the growth,photosynthesis and yield of po-tato virus-free seedlings,with significant economic benefits.Therefore,it can be used as a substitute for conventional substrate in the production of minitubers.关键词
马铃薯/黄芪秸秆/形态指标/光合指标/产量/经济效益/隶属函数Key words
Potato(Solanum tuberosum L.)/Astragalus membranaceus straw/Morphological in-dex/Photosynthetic index/Yield/Economic benefit/Membership function引用本文复制引用
孔乐辉,范奕,谭伟军,张娟宁,韩儆仁,姚攀锋,阿金娟,李亚杰,马宁..黄芪秸秆基质对马铃薯原原种光合特征和产量的影响[J].西北农业学报,2025,34(8):1408-1418,11.基金项目
甘肃省科技重大专项计划(23ZDNA006) （23ZDNA006）
甘肃省技术创新引导计划-农业类(22CX8NJ153) （22CX8NJ153）
科技特派员(基地)专项(23CXNJ0017) （基地）
定西市重点技术攻关专项(DX2022BZ38) （DX2022BZ38）
甘肃省重点研发计划(23YFNJ0005) （23YFNJ0005）
甘肃省陇原青年英才专项. Special Program for Key Science and Technology of Gansu Province(No.23ZDNA006) （No.23ZDNA006）
Technological Innovation Guidance Plan in Agriculture of Gansu Province(No.22CX8NJ153) （No.22CX8NJ153）
Special Program of Science and Technology Commissioner(Base)(No.23CXNJ0017) （Base）
Dingxi Key Technology Research Project(No.DX2022BZ38) （No.DX2022BZ38）
Key R&D Plan Project of Gansu Province(No.23YNJ0005) （No.23YNJ0005）
Gansu Provincial Longyuan Youth Talent Special Fund. （）
