| 成都平原青贮玉米间作拉巴豆对混合饲草产量及品质的影响 |
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| 引用本文： | 董志晓,何润濠,况鉴洋,聂聪,杨建,苟文龙,马啸.成都平原青贮玉米间作拉巴豆对混合饲草产量及品质的影响[J].草业科学,2021,38(8):1587-1595. |
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| 作者姓名： | 董志晓 何润濠 况鉴洋 聂聪 杨建 苟文龙 马啸 |
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| 作者单位： | 四川农业大学草业科技学院,四川,成都,611130;四川省草原科学研究院,四川,成都611730 |
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| 基金项目： | 四川省肉牛产业体系创新团队(SCCXTD-20-13) |
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| 摘 要： | 为探究成都平原地区玉米(Zea mays)与拉巴豆(Dolichos lablab)间作的最佳比例及其对混合饲草产量及品质的影响，本研究将‘德美亚一号’玉米分别与不同密度的‘润高’拉巴豆进行间作，对适宜收获时期玉米的农艺性状以及混合饲草的鲜、干草产量和饲草营养成分等指标进行了测定，并对混合饲草的鲜草产量增加部分进行了经济效益评估。结果表明随着拉巴豆播量的增加，玉米的株高、茎粗、茎叶比等指标较玉米单播处理有所降低，混合饲草产量、粗蛋白含量、粗脂肪含量、体外消化率和干鲜比等指标高于玉米单播处理。其中，52 500株·hm?2玉米间作112 500株·hm?2拉巴豆处理的混合饲草鲜草产量最高，为63 711.86 kg·hm?2，与单播玉米处理相比净增收20 081.69 CNY·hm?2，中性洗涤纤维和酸性洗涤纤维含量降低。将鲜草产量和营养成分经隶属函数综合分析表明，112 500株·hm?2拉巴豆与玉米间作的隶属函数值最高，为0.83，此处理下混合饲草综合评价最佳。综合分析表明，在成都平原地区，52 500株·hm?2的玉米与112 500株·hm?2的拉巴豆间作处理是提高饲草产量和品质的最优种植模式。
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| 关 键 词： | 玉米 拉巴豆 间作 饲草产量 营养品质 经济效益 成都平原地区 |
Effects of intercropping Dolichos lablab with silage maize on the yield and quality of mixed forage in the Chengdu Plain,China |
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| DONG Zhixiao,HE Runhao,KUANG Jianyang,NIE Cong,YANG Jian,GOU Wenlong,MA Xiao.Effects of intercropping Dolichos lablab with silage maize on the yield and quality of mixed forage in the Chengdu Plain,China[J].Pratacultural Science,2021,38(8):1587-1595. |
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| Authors: | DONG Zhixiao HE Runhao KUANG Jianyang NIE Cong YANG Jian GOU Wenlong MA Xiao |
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| Abstract: | This study aimed to explore the best proportion of corn (Zea mays) and Dolichos lablab in the Chengdu Plain, and its impact on mixed forage production and quality. The corn cultivar ‘Demeiya No. 1’ was intercropped with different sowing rates of D. lablab ‘Rungai’, and the agronomic characteristics, fresh and hay yields, and forage nutrients of corn were determined at a suitable harvest time, and the increasing corn fresh yield was used to assess the economic benefit. With the increased seeding rate of D. lablab, plant height, stem thickness, stem-leaf ratio, and other indicators of corn were decreased, while mixed forage yield, crude protein, crude fat, in vitro digestibility, and dry-to-fresh ratio increased compared with the monoculture of corn. Among them, the fresh grass yield of mixed forage treated with 52 500 plant·ha?1 corn intercropping 112 500 plant·ha?1D. lablab was the highest, at 63 711.86 kg·ha?1, and the net increase was 20 081.69 CNY·ha?1 compared with the monoculture of corn, but the content of neutral detergent fiber (NDF) and acid detergent fiber (ADF) was reduced. A comprehensive analysis of the fresh grass yield and nutrient components by the membership function revealed that the membership function value of 52 500 plant·ha?1 corn intercropping 112 500 plant·ha?1D. lablab was the highest (0.83), and the comprehensive evaluation of the mixed forage under this treatment was the best. The synthesis showed that the intercropping of 52 500 plant·ha?1 of corn with 112 500 plant·ha?1 of D. lablab was the optimal planting mode for improving forage yield and quality in the Chengdu Plain. |
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| Keywords: | corn Dolichos lablab intercropping forage yield nutritional quality economic benefit Chengdu Plain |
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