赤峰巴林左旗典型草原针茅属牧草最适收获期研究  

Balin left banner in Chifeng optimum harvest time of Stipa grandis in typical steppe

作　　者：王伟 周天荣 孙林 贾玉山 格根图 WANG Wei;ZHOU Tian-rong;SUN lin;JIA Yu-shan;GE Gentu(College of agriculture and forestry,HulunBuir College,HulunBuir,021008,China;Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences Hohhot,010019,China;College of Grassland,Resources and En-vironment,Inner Mongolia Agricultural University,Hohhot 010018,China)

机构地区：[1]呼伦贝尔学院农林学院,内蒙古呼伦贝尔021008 [2]内蒙古农牧业科学院,内蒙古呼和浩特010019 [3]内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010018

出　　处：《草原与草坪》2022年第6期122-127,共6页Grassland and Turf

基　　金：国家牧草产业技术体系(CARS-35);内蒙古自治区博士基金(2021BS03021);内蒙古自治区教育厅课程思政建设专项(ZSZX21279);呼伦贝尔学院博士基金(2020BS08);呼伦贝尔学院校级自然科学重点项目(2020 ZKZD05)。

摘　　要：通过研究不同收获期针茅属牧草营养物动态的变化,为针茅属牧草适时收获提供理论参考。试验以赤峰巴林左旗典型草原针茅(Stipa grandis)为原料,通过研究不同收获期对针茅属牧草营养含量变化的影响,利用最优母序列分析不同收获期的综合指标,筛选赤峰巴林左旗针茅属牧草的最适收获期。结果显示:相比其他收获时间,8月20日收获针茅属牧草的粗蛋白质和可溶性碳水化合物含量最高,粗蛋白含量为6.36%,可溶性糖含量为4.06%,高于其他收获期,中性洗涤纤维和酸性洗涤纤维含量适中,8月20日与针茅属牧草营养价值关联度最大,为0.96。综合分析后发现,8月20日为巴林左旗典型草原针茅属牧草的适宜收获期,此时针茅属牧草含有较高的营养价值。This study investigated the dynamic changes of nutrients of Stipa grandis at different growth stages to provide a theoretical reference for the timely harvest of Stipa grandis. In this study,S. grandis was used as raw material which was collected from the typical steppe in Chifeng. The effects of harvest dates on the nutritional content of Stipa grandis were studied. The optimal mother sequence was used to analyze the comprehensive indexes of different harvest dates,and the optimal harvest dates were selected. The results showed as follows: compared with other harvest times,with the harvest time on August 20,the crude protein and water soluble carbohydrates contents of S. grandis harvested were the highest and crude protein content was 6. 36 % DM,the water soluble carbohydrates content was 4. 06 % DM,which was higher than that of other harvest times. The content of neutral detergent fiber and acid detergent fiber was moderate. Based on comprehensive analysis,August 20 was the most suitable harvest time of S.grandis which had high nutritional value in the typical steppe of Balin Left Banner.

关 键 词：典型草原 针茅属 营养价值 收获期 

分 类 号：S812[农业科学—草业科学]