Leonard M. Lauriault, Murali K. Darapuneni, Gasper K. Martinez
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引用次数: 0
摘要
珍珠粟(Pennisetum glaucum, L.)(R. Br.)和豇豆(Vigna unguiculata L. Walp.)很好地适应半干旱地区。位于美国新墨西哥州图库姆卡里的新墨西哥州立大学Rex E. Kirksey农业科学中心进行了一项为期两年的研究,将单种珍珠粟和豇豆与它们的混合物在不同的行排列中进行比较,每年随机分成四个完整的块。处理包括单作珍珠粟(小米)与豇豆(豇豆)、珍珠粟与豇豆混栽(小米-豇豆)、隔行种植(小米-豇豆1:1)、相邻两行交替种植(小米-豇豆2:2)和相邻四行交替种植(小米-豇豆4:4)。谷子、谷子-豇豆、谷子-豇豆1:1、谷子-豇豆1:1、谷子-豇豆2:4、谷子-豇豆2:2、谷子-豇豆4:4的混合中性洗涤纤维(NDF)分别减少673、662、644、646、666 g NDF kg−1,LSD = 18, p≤0.05)。粗蛋白倾向于增加millet-cowpea 2:2。综上所述,两行豇豆与两行珍珠谷子交替种植,间距均为15cm,在珍珠谷子孕穗期收获干草可能是DM产量和营养价值折衷的最佳选择。
Pearl Millet-Cowpea Forage Mixture Planting Arrangement Influences Mixture Yield and Nutritive Value in Semiarid Regions
Pearl millet (Pennisetum glaucum (L.) R. Br.) and cowpea (Vigna unguiculata L. Walp.) are well-adapted to semiarid regions. A two-year study at New Mexico State University’s Rex E. Kirksey Agricultural Science Center at Tucumcari, NM, USA, compared monoculture pearl millet and cowpea with their mixtures in various row arrangements in four randomized complete blocks each year. Treatments included monoculture pearl millet (millet) and cowpea (cowpea), pearl millet and cowpea mixture planted in the same row (millet–cowpea), the species planted in alternate rows (millet–cowpea 1:1), the species planted in two adjacent rows alternating between species (millet–cowpea 2:2), and the species planted in four adjacent rows alternating between species (millet–cowpea 4:4), Mixture neutral detergent fiber (NDF) was reduced i millet–cowpea 1:1 and millet–cowpea 2:2 compared to millet (673, 662, 644, 646, and 666 g NDF kg−1 for millet, millet–cowpea, millet–cowpea 1:1, millet–cowpea 2:2, and millet–cowpea 4:4, respectively, LSD = 18, p ≤ 0.05). Crude protein tended to be increased in millet–cowpea 2:2. Based on these results two rows of cowpea alternated with two rows of pearl millet, all spaced at 15 cm and harvesting for hay at the pearl millet boot stage likely optimizes the compromise of DM yield and the nutritive value of the mixture.