Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2025, Vol. 33 ›› Issue (2): 609-617.DOI: 10.11733/j.issn.1007-0435.2025.02.030

Previous Articles    

Evaluation of Nutritional Value of Four High-Sugar Ryegrass Varieties on the Loess Plateau under Different Cutting Methods

ZOU Min1, CHENG Hui1, NING Jiao1, LI Teng-fei1, XIE Kai-li1, EUN Joong-kim2, SCOLLAN Nigel3, CHANG Sheng-hua1, HOU Fu-jiang1   

  1. 1. State Key Laboratory of Herbage improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland and Animal Husbandry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, College Pastoral Agriculture Science and technology, Lanzhou University, Lanzhou, Gansu Province 730020, China;
    2. Department of Animal Science, Kyungpook National University, Sangju 702-701, Republic of Korea;
    3. Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberysstwyth 661-670, UK
  • Received:2024-04-02 Revised:2024-05-15 Published:2025-03-01

黄土高原4种高糖黑麦草在不同刈割方式下的营养价值评价

邹敏1, 成慧1, 宁娇1, 李腾飞1, 谢凯丽1, Eun Joong Kim2, Nigel Scollan3, 常生华1, 侯扶江1   

  1. 1. 草种创新与草地农业生态系统全国重点实验室/兰州大学农业农村部草牧业创新重点实验室/兰州大学草地农业科技学院, 甘肃 兰州 730020;
    2. Department of Animal Science, Kyungpook National University, Sangju 702-701, Republic of Korea;
    3. Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberysstwyth 661-670, UK
  • 通讯作者: 常生华,E-mail:cychangsh@lzu.edu.cn
  • 作者简介:邹敏（2001-）,女,汉族,贵州兴义人,硕士研究生,主要从事栽培草地放牧管理研究,E-mail:220220902020@lzu.edu.cn
  • 基金资助:
    甘肃省林业和草原局甘肃省草原监测评价科技支撑项目（HT-GSZYTC-ZCJC-21009）;国家自然科学基金国际合作项目（32161143028）;国家自然科学基金（U21A20242）资助

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Abstract: To explore the effects of cutting methods on the nutritional value of different high-sugar ryegrass, four high-sugar ryegrass varieties, namely ‘AberStar’‘AberMagic’‘AberAvon’ and ‘Premium’ were planted in the Loess Plateau. Dynamic sampling was conducted to investigate the effects of multiple cutting and once cutting on the yield, nutritional quality dynamics, yield stability and complete a comprehensive evaluation. The results showed that the yield of four varieties under multiple cutting was significantly higher than that of under once cutting during the growth period, but the yield stability was 5.38%~23.91% lower than that under once cutting. The stability of crude protein content under multiple cutting was significantly higher than that of under once cutting （P<0.05）, the lowest stability of soluble carbohydrates was 31.77%~45.20%. The regeneration rate and intensity of the four varieties increased and then decreased, they under multiple cutting were 18.12%~105.21% and 18.41%~92.63% higher than that under once cutting, and the peak reached at 108 days. The food equivalent unit of multiple cutting was significantly higher than that of once cutting （P<0.05）. Among all treatments, the ‘AberStar’ showed the best yield and quality performance under multiple cutting. In this study, we identified high-yield and high-quality varieties ofhigh-sugar ryegrass and their cutting methods, which will provide scientific basis for the cultivation and management measures of high-sugar ryegrass in the Loess Plateau region.

Key words: High-sugar ryegrass, Loess Plateau, Nutritional quality, Grass yield

摘要： 为探究刈割方式对高糖黑麦草营养价值的影响,在黄土高原种植了‘AberStar’‘AberMagic’‘AberAvon’和‘Premium’4种高糖黑麦草（High-sugar ryegrass,HSR）,并进行了动态取样,研究多次刈割和一次刈割两种刈割方式对其产量、营养品质动态和稳定性的影响,并完成了综合评价。结果表明：在牧草的生长过程中,4个品种多次刈割的产量均高于一次刈割,但产量稳定性低于一次刈割5.38%~23.91%。多次刈割的粗蛋白含量稳定性显著高于一次刈割（P<0.05）,可溶性碳水化合物稳定性最低为31.77%~45.20%。4个品种的再生速度和再生强度呈先升后降趋势,多次刈割的再生速度和再生强度分别高于一次刈割18.12%~105.21%和18.41%~92.63%,并在108 d时达到最高。多次刈割的食物当量显著高于一次刈割（P<0.05）。在所有处理组合中,‘AberStar’品种进行多次刈割产量和品质表现最佳。本研究确定了高产优质的高糖黑麦草品种及其刈割方式,将为黄土高原地区高糖黑麦草的栽培管理措施提供科学依据。

关键词: 高糖黑麦草, 黄土高原, 营养品质, 产草量