燕麦/毛苕子混播比例对其种间竞争和经济效益的影响

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中图分类号：S54 文献标识码：A 文章编号：1007-0435（2025）08-2703-10

doi：10.11733/j.issn.1007-0435.2025.08.030

Abstract：In order to investigate the suitable mixed sowing ratio of oat（Avena sativa）and hairy vetch（Vicia villosa）in the Yellow River irigation area of Ningxia，‘Xiyun’oat and ordinary hairy vetch were used as test materials in the experiment. Four mixed sowing ratios of oat and hairy vetch ， ，6：4 （2号 （Y6M4） and ]，oat monoculture（YD），and hairy vetch monoculture（MD）were established to study the interspecific competition，production performance and economic benefits of forage under dierent mixed sowing ratios. The results of two cuts showed that the oat/hairy vetch mixed-seeding ratio of 6：4 was more significant than other mixed-seeding ratios and oat monoculture in terms of land resource utilization，productivity improvement and economic returns. The competitive ratio （ CRY ）of oat was greater than 1 and the aggressiveness Ω⋅AY⋅ ） was greater than O in the mixed cropping. In addition，the land equivalent ratio（LER） was greater than 1 for the diferent mixed seeding ratios and land use eficiency increased by an average of 19.5% . The dry matter yield （6.63t⋅hm-2 ）and crude protein yield （809.55kg⋅hm-2） of the Y6M4 mixtures treatment increased by 13.23% and 27.87% ，respectively，compared to the oat monoculture. The Y8M2 mixture treatment had the highest economic benefit（11116 CNY⋅hm-2） . The results of principal component analysis showed that when oat：hairy vetch was 6：4（Y6M4） ，the comprehensive ranking was the first，which could be used as the best mixed sowing ratio of oat/hairy vetch in the Ningxia Yellow River irigated area.

Key words：Oat/hairy vetch mixed sowing;Yellow River irigation area;The proportion of mixed sowing;Inter specific competition;Economic benefits

近年来，随着饮食结构的改变，人们对畜产品的需求明显上升，致使家畜对饲草需求量逐年增加。（剩余12842字）