干燥方式与时间对天然牧草营养品质和叶绿素含量的影响

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引用格式：，等.干燥方式与时间对天然牧草营养品质和叶绿素含量的影响[J].草地学报，2025，33 （7）：2368-2373 LIU Jian-liang，JIAYu-shan，GEGen-tu，etal.TheEfectsofDrying Methodsand Drying Time on theNutritional Quality and Chlorophyll Content ofNatural Grassland Forage[J]. Acta Agrestia Sinica，2O25，33（7）：2368-2373

关键词：天然牧草；营养品质；叶绿素含量；干草调制；干燥方式中图分类号：S816 文献标识码：A 文章编号：1007-0435（2025）07-2368-06

The Effects of Drying Methods and Drying Time on the Nutritional Quality and Chlorophyll Content of Natural Grassland Forage

LIU Jian-liang1， JIA Yu-shanl*，GE Gen-tu1，WANG Zhi-jun1， SI Qiang1，SONG Chao-ran MA Wei-qin¹，SHENG Pan-jie1，ZHAO Jia-yu1，ZHOU Yu-lei²

（1.College ofGrassand Science，InnerMongolia Agricultural University，KeyLaboratoryofForage Cultivation，Processing， andEfficient Utilization，MinistryofAgriculture and RuralAffairs，Hohhot，Inner Mongolia Olool9，China; 2.Chifeng University，Chifeng，Inner Mongolia O24ooo，China）

Abstract：This study aimed to investigate the effects ofvarious drying times and methods on the nutritional quality and chlorophyll contents of natural grassland forage during the drying process.The experimental materials comprised natural forage sourced from a representative area in Xilin Gol League， Inner Mongolia. Two drying methods were implemented： shade drying and natural drying. Samples were collcted at intervals of 0h ， 12h ， 24h ， 36h ， 48h ！ 60h ，and 72h .The chlorophyll contents（including chlorophyll a，chlorophyll b，and total chlorophyll）and nutritional quality of the forage were analyzed under these varying conditions.Results indicated that forages dried using the shade method exhibited significantly higher levels of chlorophyll，dry mater （DM），and crude protein（CP）compared to those dried naturally. Furthermore，as drying time increased，a downward trend was observed in chlorophylla，chlorophyll b，total chlorophyll，DM，and CP，while the concentrations of acid detergent fiber（ADF）and neutral detergent fiber（NDF）increased．The interaction between drying time and method significantly influenced both chlorophyllcontents and nutritional quality （ P< O.05）.In conclusion，comprehensive analysis indicates that，under favorableconditions，shadedrying is recommended as the optimal method for hay preparation in the typical grasslands of Xilin Gol League.

Key words：Natural forage;Nutritional quality; Chlorophyll content;Hay preparation;Drying method

天然草地牧草是草食牲畜的重要饲草来源，对草原畜牧业的健康、稳定发展起着至关重要的作用。（剩余9399字）