种植及收获因子对紫花苜蓿干草产量和茎叶比的影响

doi:10.11686/cyxb20150305

草业学报 ›› 2015, Vol. 24 ›› Issue (3): 48-57.DOI: 10.11686/cyxb20150305

种植及收获因子对紫花苜蓿干草产量和茎叶比的影响

刘东霞¹，刘贵河^1*，杨志敏²

1.河北北方学院，河北张家口　075000;
2.河北省张家口市农业科学院，河北张家口 075000

收稿日期:2014-09-02 修回日期:2014-11-03 出版日期:2015-03-20 发布日期:2015-03-20
通讯作者: E-mail:guiheliu@sina.com
作者简介:刘东霞(1977-)，女，河北张家口人，博士。E-mail:liudongdong2879@sina.com
基金资助:
河北北方学院创新人才培育项目(CXRC1313)和公益性行业(农业)科研专项经费(201203024)资助。

The effects of planting and harvesting factors on hay yield and stem-leaf ratio of Medicago sativa

LIU Dongxia¹, LIU Guihe^1*, YANG Zhimin²

1.Department of Grassland Science, Sichuan Agicultural University, Yan’an 625014, China;
2.Gansu Forestry Science and Technology Research Academy, Lanzhou 730020, China

Received:2014-09-02 Revised:2014-11-03 Online:2015-03-20 Published:2015-03-20

摘要/Abstract

摘要： 本文研究了苜蓿品种及播种量、行间距、播种深度、刈割高度等栽培因子对苜蓿干草产量及茎叶比的影响。结果表明，行距对产量的影响最大，前三茬及年总干草产量中，行距的产量贡献率均最大。而苜蓿品种及刈割高度对茎叶比的影响较大。不同的行距处理中，苜蓿产量以20 cm行距最高，显著高于50 cm，随着行距的加大，干草产量逐渐下降，但与30 cm行距的产量无显著差异。第4茬干草产量在不同品种之间差异较大，新疆大叶和金皇后苜蓿品种产量较高。而播种深度、播种量、刈割高度各水平之间无显著差异。苜蓿的茎叶比在苜蓿品种之间均存在显著差异，中苜1号苜蓿茎叶比最小，金皇后茎叶比最大。茎叶比在行距、播种量和播种深度不同水平之间无显著差异。

Abstract: This paper reports the effects of cultivar, seed sowing rate, row spacing, sowing depth and cutting height on hay yield and stem∶leaf ratio of Medicago sativa. Row spacing had the greatest impact on hay yield, especially the first 3 cuts of the growing season and annual yield. However, the cultivar of M. sativa and cutting height were the most important determinants of stem-leaf ratio. Hay yield was greatest at a row spacing of 20 cm and diminished with increasing row spacing. Yield was significantly lower at 50 cm than 20 cm row spacing, but not significantly reduced at 30 cm, compared to 20 cm row spacing. Cultivar differences were evident for hay yield of the fourth cutting, with Xingjiangdaye and Jinhuanghou having high late season yield compared to other cultivars. However, there were obvious differences between the breeds in stem∶leaf ratio, with Zhongmu the lowest and that of Jinhuanghou the highest. Some statistically significant effects of seed sowing rate, sowing depth and cutting height were observed and are discussed. Effects of seed sowing rate, sowing depth and cutting height were not statistically significant.

刘东霞，刘贵河，杨志敏. 种植及收获因子对紫花苜蓿干草产量和茎叶比的影响[J]. 草业学报, 2015, 24(3): 48-57.

LIU Dongxia, LIU Guihe, YANG Zhimin. The effects of planting and harvesting factors on hay yield and stem-leaf ratio of Medicago sativa[J]. Acta Prataculturae Sinica, 2015, 24(3): 48-57.

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种植及收获因子对紫花苜蓿干草产量和茎叶比的影响

The effects of planting and harvesting factors on hay yield and stem-leaf ratio of Medicago sativa

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