| 宁夏干旱区滴灌条件下拉巴豆不同播种量与甜高粱混播饲草生产性能研究 |
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| 引用本文： | 王腾飞,王斌,邓建强,李满有,倪旺,冯琴,妥昀昀,兰剑.宁夏干旱区滴灌条件下拉巴豆不同播种量与甜高粱混播饲草生产性能研究[J].草业学报,2023,32(3):30-40. |
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| 作者姓名： | 王腾飞 王斌 邓建强 李满有 倪旺 冯琴 妥昀昀 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.中粮饲料银川有限公司，宁夏 银川 750021 |
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| 基金项目： | 宁夏高等学校一流学科建设（草学学科）项目(NXYLXK2017A01);国家自然科学基金(32160406┫项目和“一年两熟”人工草地可持续发展模式研究与示范项目┣2020BBF02001) |
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| 摘 要： | 采用合理的种植方式能够有效缓解宁夏干旱区饲草产量低、品质差问题，本研究在滴灌条件下设置不同播种量(S0:0 kg·hm-2,S1:16.5 kg·hm-2,S2:33.0 kg·hm-2,S3:49.5 kg·hm-2,S4:66.0 kg·hm-2)拉巴豆与甜高粱混播，对甜高粱农艺性状和混播草地生产性能以及牧草营养品质进行综合分析。2年试验结果表明，拉巴豆播种量对甜高粱株高、茎粗、茎秆1～4节强度和茎秆5～7节强度及混播草地干草产量、粗蛋白产量、粗蛋白含量、中性洗涤纤维含量、酸性洗涤纤维含量和相对饲喂价值有显著影响(P<0.05)，其中甜高粱株高、茎粗、混播草地干草产量和粗蛋白产量随拉巴豆播种量的增加呈先增加后降低趋势，草地总干草产量、粗蛋白产量和相对饲喂价值均在S3处理下达到最大，分别为32.12 t·hm-2、4....
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| 关 键 词： | 拉巴豆 甜高粱 生产性能 营养品质 综合评价 |
| 收稿时间： | 2022-03-17 |
| 修稿时间： | 2022-04-13 |
Effect of sowing rate on yield and forage quality of a Dolichos lablab-Sorghum bicolor mixture under drip irrigation in arid areas of Ningxia |
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| Teng-fei WANG,Bin WANG,Jian-qiang DENG,Man-you LI,Wang NI,Qin FENG,Yun-yun TUO,Jian LAN.Effect of sowing rate on yield and forage quality of a Dolichos lablab-Sorghum bicolor mixture under drip irrigation in arid areas of Ningxia[J].Acta Prataculturae Sinica,2023,32(3):30-40. |
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| Authors: | Teng-fei WANG Bin WANG Jian-qiang DENG Man-you LI Wang NI Qin FENG Yun-yun TUO Jian LAN |
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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.Cofco Feed （Yinchuan） Co. ，Ltd. ，Yinchuan 750021，China |
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| Abstract: | Effective planting methods can alleviate the problem of low forage yield and poor quality in arid areas of Ningxia. In this study， a mixture of Dolichos lablab and Sorghum bicolor was sown at five different seeding rates （S0： 0 kg·ha-1， S1： 16.5 kg·ha-1， S2： 33.0 kg·ha-1， S3： 49.5 kg·ha-1， S4： 66.0 kg·ha-1） and grown under drip irrigation. The agronomic traits of S. bicolor， the yield of the mixed sward， and the nutritional quality of forage were comprehensively analyzed in a two-year experiment. It was found that the seeding rate of the D. lablab-S. bicolor mixture significantly affected plant height， stem diameter， the stem strength at the first to the fourth internodes； The stem strength at the fifth to seventh internodes of S. bicolor； And the hay yield， crude protein yield， crude protein content， neutral detergent fiber content， acid detergent fiber content， and relative feed value of the mixed sward （P<0.05）. Among these parameters， plant height， stem diameter of S. bicolor， and the hay yield and crude protein yield of the mixed sward first increased and then decreased with increasing seeding rate of the D. lablab-S. bicolor mixture. The highest values for total hay yield， crude protein yield， and relative feed value occurred in the S3 treatment （32.12 t·ha-1， 4.13 t·ha-1， and 117.30， respectively）. The highest crude protein content of mixed forage （12.31%） was in the S4 treatment. According to the results of a principal component analysis， plant height， stem diameter， crude protein yield， total hay yield， strength of the stem at the first to fourth internodes， and the relative feed value of the mixed D. lablab-S. bicolor sward made the largest contributions to forage yield and quality. The treatments were ranked， from highest yield and quality to lowest， as follows： S3>S2>S4>S1>S0. Based on the yield and nutritional quality of the mixed swards， it is suggested that the optimum seeding rate of D. lablab and S. bicolor grown under drip irrigation in arid areas of Ningxia is 49.5 kg·ha-1. |
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| Keywords: | Dolichos lablab Sorghum bicolor yield performance nutritional quality overall merit |
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