Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2016, Vol. 24 ›› Issue (2): 425-432.DOI: 10.11733/j.issn.1007-0435.2016.02.027

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Nutrient Content of Sweet Sorghum and Corns in Different altitude Regions and Sweet Sorghum in Different Clipping frequency

LI Chun-xi1, FENG Hai-sheng1, YAN Hui-ying1,2, PEI Jian-min3, LI Yong-ren4   

  1. 1. Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049;
    3. Minhe Haishun Livestock Technology Co., Ltd., Minhe, Qinghai Province 810800, China;
    4. Chunyuan Animal Husbandry Co. Ltd., Huangzhong, Qinghai Province 811603, China
  • Received:2015-01-14 Revised:2015-06-11 Online:2016-04-15 Published:2016-06-06

不同海拔生态区甜高粱和玉米及甜高粱不同刈割次数的养分含量

李春喜1, 冯海生1, 闫慧颖1,2, 裴剑民3, 李永仁4   

  1. 1. 中国科学院西北高原生物研究所 中国科学院高原生物适应与进化重点实验室, 青海 西宁 810008;
    2. 中国科学院大学, 北京 100049;
    3. 青海民和海顺牧业科技有限公司, 青海 民和 810800;
    4. 青海春源畜牧有限公司, 青海 湟中 811603
  • 作者简介:李春喜(1959-),男,河南新乡人,副研究员,从事作物遗传育种与栽培学研究,E-mail:cxli@nwipb.cas.cn
  • 基金资助:

    青海省科技厅重大科技专项项目(2015-NK-A3-1-2);青海省科技厅农转项目(2012-N-504)资助

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Abstract:

In order to explore plant nutrient content of sweet sorghum(sorghum bicolor ‘Moench’)and corn(Zea mays ‘Linn’) in different altitude regions and sweet sorghum in different clipping frequency, nutrent content of whole plant of three sweet sorghum and one corn varieties were analyzed. The results showed that the fat, nitrogen-free extarct and sugar content of sweet sorghum were higher than corn, however, the ash content, crude fiber, neutral detergent fiber, acid detergent fiber and calcium of sweet sorghum were lower than corn at three altitudes. The crude protein and phosphorus content of sweet sorghum were higher than corn in 1850~1990 m altitudes. The nutrient content of sweet sorghum was significantly affected by clipping frequency. The content of crude protein, crude fiber, neutral detergent fiber, acid detergent fiber, ash and calcium were the highest in the first cutting. The nitrogen-free extract, phosphotus and sugar contents of sweet sorghum were the highest in control. All of these results suggested that the sweet sorghum was a high quality forge crop and it should be widely planted in pastoral areas.

Key words: Sweet sorghum, Altitude, Clipping, Nutrient

摘要：

为探讨甜高粱(sorghum bicolor ‘Moench’)和玉米(Zea mays ‘Linn’)在青海不同海拔生态区及甜高粱不同刈割次数的植株养分含量,以3个甜高粱和1个玉米品种为试验材料,采用随机区组设计,分析整株养分含量。结果表明:在3个海拔生态区甜高粱的粗脂肪、无氮浸出物和糖含量均高于玉米,而灰分、粗纤维、中性洗涤纤维、酸性洗涤纤维和钙含量低于玉米;海拔1850~1990 m甜高粱粗蛋白含量高于玉米,磷含量极显著高于玉米(P < 0.01)。刈割次数对甜高粱养分含量影响达极显著水平(P < 0.01)。第1次刈割甜高粱粗蛋白、粗纤维、中性洗涤纤维、酸性洗涤纤维、灰分和钙含量最高;对照(不刈割)无氮浸出物、磷和糖含量最高。表明甜高粱是优质饲料作物,应大力推广种植。

关键词: 甜高粱, 海拔, 刈割, 养分

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