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Oat genotypic requirement for intercropping with vetch under Mediterranean conditions
The Journal of Agricultural Science ( IF 2 ) Pub Date : 2021-02-24 , DOI: 10.1017/s0021859621000071
D. Baxevanos , I. T. Tsialtas , O. Voulgari , C. I. Pankou , D. Vlachostergios , A. S. Lithourgidis

Oat (Avena spp. L.) intercropped with common vetch (Vicia sativa L.) has shown high forage yield and crude protein content (CP) in rainfed Mediterranean environments of Greece. The objective was to study the oat genotypic interactions for yield, quality and agronomic traits of four oat accessions (cv. Flega and lines B2, B3 and B4) grown as intercrops with a common vetch cultivar (Pegasus) and as monocrops without or with nitrogen (N) supplementation (100 kg N/ha). In all mixtures, the land equivalent ratio exceeded the unit indicating that there was a yield advantage. Intercrops produced, on average, 5.0% less dry matter (DM) and 38.9% more crude protein yield (CPY) compared to monocropped oats with N fertilization and 3.4% more DM and 75.5% more CPY compared to monocropped oats without N fertilization. The DM, CP and quality differences between the intercropped and monocropped oats were attributed to oats by vetch cultivar interactions. The oat B2 intercropped was the shortest, the latest flowering and the less vigorous early in the season, a trait that allowed common vetch to dominate in the intercrop (vetch participation 770 g/kg). The high vetch fragment in the intercrop contributed to high CP, CPY, acid detergent lignin, total digestible nutrients, relative feeding value, relative forage quality, net energy for lactation and to low neutral detergent fibre, acid detergent fibre and hemicellulose. The replacement value index indicated that the intercrop was 21% more economically viable in comparison to the fertilized monocrop.

中文翻译:

地中海条件下与紫云英间作的燕麦基因型要求

燕麦 (燕麦spp. L.) 与紫云英间作(维西亚sativa L.) 在希腊的雨养地中海环境中表现出高草料产量和粗蛋白含量 (CP)。目的是研究作为与普通紫云英品种(Pegasus)的间作和无氮或有氮的单一作物种植的四种燕麦种质(品种 Flega 和品系 B2、B3 和 B4)的产量、质量和农艺性状的燕麦基因型相互作用(N) 补充 (100 kg N/ha)。在所有混合物中,土地当量比都超过了单位,表明存在产量优势。与施氮的单作燕麦相比,间作的干物质 (DM) 平均减少 5.0%,粗蛋白产量 (CPY) 增加 38.9%,与未施氮的单作燕麦相比,干物质 (DM) 和粗蛋白产量 (CPY) 平均增加 3.4% 和 75.5%。DM,间作和单作燕麦之间的 CP 和质量差异归因于燕麦通过野豌豆品种的相互作用。间作的燕麦 B2 是最短的、最晚的开花期且在季节早期较不旺盛,这一特性使得普通紫云英在间作中占主导地位(野豌豆的参与量为 770 g/kg)。间作中的高紫薇片段有助于提高 CP、CPY、酸性洗涤剂木质素、总可消化养分、相对饲用价值、相对草料品质、泌乳净能和低中性洗涤纤维、酸性洗涤纤维和半纤维素。重置价值指数表明,与施肥的单作相比,间作在经济上的可行性提高了 21%。最晚开花且在季节早期较不旺盛,这一特性使普通紫云英在间作中占主导地位(紫云英参与度 770 克/公斤)。间作中的高紫薇片段有助于提高 CP、CPY、酸性洗涤剂木质素、总可消化养分、相对饲用价值、相对草料品质、泌乳净能和低中性洗涤纤维、酸性洗涤纤维和半纤维素。重置价值指数表明,与施肥的单作相比,间作在经济上的可行性提高了 21%。最晚开花且在季节早期较不旺盛,这一特性使普通紫云英在间作中占主导地位(紫云英参与度 770 克/公斤)。间作中的高紫薇片段有助于提高 CP、CPY、酸性洗涤剂木质素、总可消化养分、相对饲用价值、相对草料品质、泌乳净能和低中性洗涤纤维、酸性洗涤纤维和半纤维素。重置价值指数表明,与施肥的单作相比,间作在经济上的可行性提高了 21%。泌乳净能和低中性洗涤纤维、酸性洗涤纤维和半纤维素。重置价值指数表明,与施肥的单作相比,间作在经济上的可行性提高了 21%。泌乳净能和低中性洗涤纤维、酸性洗涤纤维和半纤维素。重置价值指数表明,与施肥的单作相比,间作在经济上的可行性提高了 21%。
更新日期:2021-02-24
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