| 不同播种量下行距配置对紫花苜蓿产量及品质的影响北大核心CSCD |
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| 引用本文： | 王斌,杨雨琦,李满有,倪旺,海艺蕊,张顺香,董秀,兰剑.不同播种量下行距配置对紫花苜蓿产量及品质的影响北大核心CSCD[J].草业学报,2022,31(2):147-158. |
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| 作者姓名： | 王斌 杨雨琦 李满有 倪旺 海艺蕊 张顺香 董秀 兰剑 |
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| 作者单位： | 1.宁夏大学农学院，宁夏 银川 750021;2.宁夏草牧业工程技术研究中心，宁夏 银川 750021;3.宁夏隆德县城关畜牧兽医工作站，宁夏 固原 756000;4.兰州大学草地农业科技学院，甘肃 兰州 730020 |
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| 基金项目： | 国家重点研发计划(2016YFC0500505);宁夏高等学校一流学科建设(草学学科)项目(NXYLXK2017A01)资助。 |
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| 摘 要： | 为探讨宁夏引黄灌区紫花苜蓿优质高效生产的最佳播种量和行距配置,试验采用双因素随机区组设计,研究了不同播种量(S_(1):13.5 kg·hm^(-2),S_(2):18.0 kg·hm^(-2),S_(3):22.5 kg·hm^(-2))和行距配置(R_(1):15 cm等行距,R_(2):20 cm等行距,R_(3):两窄一宽15 cm+15 cm+20 cm,R_(4):一窄一宽15 cm+20 cm)对紫花苜蓿生产性能和品质的影响。3年试验结果表明,播种量和行距对紫花苜蓿分枝数、叶茎比、干草产量、粗蛋白、中性洗涤纤维含量和相对饲喂价值有显著影响(P<0.05),其中分枝数、叶茎比、干草产量和粗蛋白含量随播种量的增加呈先增加后降低趋势。干草产量(18.41 t·hm^(-2))、粗蛋白含量(21.00%)在播种量为18.0 kg·hm^(-2)和行距为15 cm+15 cm+20 cm时最高。中性洗涤纤维(36.50%)和酸性洗涤纤维(26.59%)含量在行距为20 cm时最低。相对饲喂价值(171.98)在播种量为18.0kg·hm^(-2)和行距为20 cm时最高。3年各项指标数据取其平均值,经主成分分析(PCA)可知,紫花苜蓿干草产量、叶茎比、分枝数和中性洗涤纤维贡献率较大,株高和酸性洗涤纤维贡献率较小。播种量为18.0 kg·hm^(-2)和行距为15cm+15 cm+20 cm时有利于提高紫花苜蓿干草产量和营养品质,是该地区紫花苜蓿草地最佳播种量和行距配置。
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| 关 键 词： | 紫花苜蓿 引黄灌区 播种量 行距 产量 品质 |
| 收稿时间： | 2020-12-08 |
| 修稿时间： | 2021-05-06 |
The effect of sowing rate and row spacing on the yield and quality of alfalfa in the Ningxia Yellow River irrigation area |
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| WANG Bin,YANG Yu-qi,LI Man-you,NI Wang,HAI Yi-rui,ZHANG Shun-xiang,DONG Xiu,LAN Jian.The effect of sowing rate and row spacing on the yield and quality of alfalfa in the Ningxia Yellow River irrigation area[J].Acta Prataculturae Sinica,2022,31(2):147-158. |
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| Authors: | WANG Bin YANG Yu-qi LI Man-you NI Wang HAI Yi-rui ZHANG Shun-xiang DONG Xiu LAN Jian |
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| Institution: | 1.College of Agriculture，Ningxia University，Yinchuan 750021，China;2.Ningxia Grass and Animal Husbandry Engineering Technology Research Center，Yinchuan 750021，China;3.Ningxia Longde County Chengguan Animal Husbandry and Veterinary Work Station，Guyuan 756000，China;4.College of Grassland Agriculture Science and Technology，Lanzhou University，Lanzhou 730020，China |
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| Abstract: | This research explored the optimal sowing rate and row spacing configuration for high-quality and high-efficiency production of alfalfa （Medicago sativa） in the Ningxia Yellow River irrigation area. In a three-year experiment， a two-factor randomized block design was used to study the effects on the yield and quality of alfalfa， of different sowing rates （S1： 13.5 kg·ha-1， S2： 18.0 kg·ha-1， S3： 22.5 kg·ha-1） and row spacing configurations （R1： 15 cm equal row spacing， R2： 20 cm equal row spacing， R3： rows spaced two narrow and one wide 15 cm+15 cm+20 cm， R4： rows spaced one narrow and one wide 15 cm+20 cm）. It was found that the number of branches， leaf∶stem ratio， hay yield， crude protein， neutral detergent fiber content and relative feeding value of alfalfa were significantly affected by both sowing rate and row spacing （P<0.05）. The results of three-year experiment showed that the sowing rate and row spacing had significant effects on the branch number， leaf stem ratio， hay yield， crude protein， neutral detergent fiber content and relative feeding value of Alfalfa （P<0.05）. The hay yield （18.41 t·ha-1） and crude protein content （21.00%） were the highest when sowing rate was S2 and row spacing was R3. The contents of neutral detergent fiber （36.50%） and acid detergent fiber （26.59%） were the lowest when the row spacing was R2. Relative feeding value （171.98） was the highest when sowing rate was S2 and row spacing was R2. These findings are based on averaged data from the three years. A principal component analysis （PCA） showed that the drymatter yield， leaf∶stem ratio， branch number and neutral detergent fiber level of herbage were more responsive to the alfalfa sowing rate and row spacing treatments contribution rate of alfalfa were larger， and the plant height and acid detergent fiber responses were smaller. The treatment combination S2R3 （sowing rate of 18.0 kg·ha-1 and row spacing of 15 cm+15 cm+20 cm） was the optimal sowing rate and row spacing combination for alfalfa forage production in this region for maximization of hay yield and forage nutritional quality. |
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| Keywords: | alfalfa Yellow River irrigation area sowing rate row spacing yield quality |
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