首页|大狼毒根浸提液对3种优良牧草的化感作用研究

大狼毒根浸提液对3种优良牧草的化感作用研究

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为筛选适宜用于滇西北大狼毒型退化草地补播治理的优良草种，以白三叶、多年生黑麦草、西南野古草3种适应高寒气候条件的牧草为受体材料，采用培养皿滤纸法和穴盘培养法，开展大狼毒根浸提液对3种优良牧草的化感作用研究。结果表明:3种供试牧草在种子萌发、幼苗生长和光合作用方面均会受到大狼毒根浸提液不同程度的化感抑制作用，其对3种牧草的种子萌发及幼苗光合能力抑制作用表现为西南野古草>多年生黑麦草>白三叶，对幼苗生长抑制作用表现为西南野古草>白三叶>多年生黑麦草。综合而言，白三叶和多年生黑麦草较耐化感，适合用于滇西北高寒地区大狼毒型退化草地的补播治理。生产中建议将两者搭配使用，以实现更好的补播效果。
Study on the Allelopathic Effects of Extracs from the Roots of Euphorbia jolkinii on Three High Quality Forages
In order to screen for high quality forage cultivar remediation of the degraded grassland of Euphorbia jolkinii in northwest Yunnan,three kinds of forage grasses adapted to high altitude climate con-ditions,perennial ryegrass,white clover and Arundinella hookeri,were used as receptor materials.The allelopathic effects of Euphorbia jolkinii root extract on the three forage grasses were studied by the method of petri dish filter paper and the method of pit culture.The results showed that Euphorbia jolkinii had varying degrees of allelopathic inhibition on seed germination,seedling growth and photosynthesis of the three forages.The inhibition of seed germination and seedling photosynthetic capacity was Arundinella hookeri>perennial ryegrass>white clover,and the inhibition of seedling growth was Arundinella hookeri>white clover>perennial ryegrass.In general,white clover and perennial ryegrass exhibited stronger allelo-pathic effects and were more suitable for the remediation of the degraded grassland of Euphorbia jolkinii in the northwest alpine region of Yunnan.It is suggested to use the two together in production to achieve opti-mal results.

Euphorbia jolkiniiGermination of seedSeedling growthPhotosynthetic characteris-ticsAllelopathic effect

牛琼梅、杨欣、马祖艳、初晓辉、罗钦、刘洋、谢勇、刘佳、单贵莲

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云南农业大学动物科学技术学院,云南 昆明 650201

云南省林业与草原局,云南 昆明 650224

云南省昆明市动物疫病预防控制中心,云南 昆明 650223

香格里拉市林业和草原局,云南 迪庆 674499

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大狼毒 种子萌发 幼苗生长 光合特性 化感效应

云南省万人计划青年拔尖人才专项云南省农业联合专项云南省农业联合专项云南省农业联合专项

YNWR-QNBJ-2018-031202101BD070001-068202301BD070001-134202301BD070001-174

2024

10.16742/j.zgcdxb.20230111

中国草地学报
中国农业科学院草原研究所 中国草地学会

中国草地学报

CSTPCD北大核心
影响因子：1.347
ISSN：1673-5021
年,卷(期)：2024.46(1)
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