| 饲草型小黑麦在定西地区的最佳刈割期 |
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| 引用本文： | 赵雅姣, 田新会, 杜文华. 饲草型小黑麦在定西地区的最佳刈割期[J]. 草业科学, 2015, 9(7): 1143. DOI: 10.11829/j.issn.1001-0629.2014-0340 |
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| 作者姓名： | 赵雅姣 田新会 杜文华 |
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| 作者单位： | 1. |
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| 基金项目： | 公益性行业(农业)科研专项(201003019)，国家自然科学基金(31360577)，现代农业产业技术体系建设专项资金资助(CARS-40-09B)，甘肃省科技厅国际合作项目(1104WCGA191) |
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| 摘 要： | 饲草型小黑麦新品系P2在孕穗期、抽穗期、开花期与乳熟期刈割，测定其鲜草产量、干草产量、鲜干比、株高、粗蛋白含量、酸性洗涤纤维及中性洗涤纤维含量等指标，利用灰色关联度分析法进行综合评价，根据评价结果确定该品系的最佳刈割期。结果表明，乳熟期干草产量最大，为21.58 thm-2；抽穗期粗蛋白产量（2.24 thm-2）均高于其他生育时期，且综合评价也最高。要得到较高的经济效率，应选择乳熟期刈割；而要得到最佳利用率，应选择抽穗期刈割。
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| 关 键 词： | 小黑麦；生育时期；刈割期；综合评价 |
| 收稿时间： | 2014-07-16 |
Studies on the optimal cutting period of forage triticale in Dingxi area |
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| Ya-jiao ZHAO, Xin-hui TIAN, Wen-hua DU. Studies on the optimal cutting period of forage triticale in Dingxi area[J]. Pratacultural Science, 2015, 9(7): 1143. DOI: 10.11829/j.issn.1001-0629.2014-0340 |
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| Authors: | Ya-jiao ZHAO Xin-hui TIAN Wen-hua DU |
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| Abstract: | The forage triticale new variety P2 was cut at the booting, heading, flowering and milking stage and the indices including the fresh weight, hay yield, fresh dry radio, crude protein content, height, acid detergent fiber content and neutral detergent fiber were determined. And then, the grey correlation analysis was employed to comprehensive evaluated these indices to select the optimal cutting period for this forage triticale variety. The results showed that the hay yield peaked at the milking stage with 21.58 tha-1 whereas the crude protein yield peaked at the heading stage with 2.24 tha-1 and highest comprehensive evaluation. Based on these results, the plants should be cut at milking stage for higher economic efficiency and cut at heading stage for best utilization efficiency. |
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| Keywords: | Triticale wittmack growth stage cutting period comprehensive evaluation |
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