草业学报2024，Vol.33Issue(3)：107-119,13.DOI:10.11686/cyxb2023127
宁夏引黄灌区燕麦与箭筈豌豆的混播效果研究
A study of mixed sowing effects for oat and common vetch in the Ningxia Yellow River Irrigation Area
摘要
Abstract
The ratio of seeding rates in mixed sowings of legumes and grasses is a key factor affecting the yield and quality of mixed grassland.This research investigated the optimal ratio of mixed sowing seeding rates for oat and common vetch in the Ningxia Yellow River Irrigation Area.Six treatments were set up:Four ratios of oat and common vetch[A5V5(5∶5),A6V4(6∶4),A7V3(7∶3)and A8V2(8∶2)]together with oat and common vetch monocultures,to investigate the production,interspecific competition and nutritional value of the two monocultures and their combinations.It was found that the annual hay yield of the mixed treatments ranged from 14.84 to 17.62 t·ha-1,which was 4.53%to 24.10%higher than that of oats sown alone and 64.03%to 94.75%higher than that of common vetch sown alone.The A8V2 treatment had the highest annual hay yield(17.62 t·ha-1),which was significantly higher than that of the single sown and A5V5 treatments.The treatment A6V4 had the second highest trial yield of 16.61 t·ha-1.The land equivalent ratio of all mixtures was greater than 1,indicating that the mixtures improved land use efficiency.Interspecies disturbance was less than intraspecies disturbance,and oat and common vetch showed a synergistic relationship,whereby the highest land equivalent ratio of 1.30 was found in the A8V2 treatment,indicating that this treatment had the greatest benefit in terms of increased yield.The relative yields of oat were all greater than those of common vetch in the mixed treatments.The aggression intensity of oat was greater than 0 and the competition ratio of oat was greater than that of common vetch,indicating that the aggression of oats was greater than that of common vetch and that oat had a competitive advantage.Regarding the nutritional quality of the forage,there was no significant difference between the mixed treatments.However,A5V5 had the numerically highest nutritional quality and A6V4 had the numerically highest crude protein yield(1.90 t·ha-1).Overall,mixed cropped oat and common vetch had the highest yield,land equivalent ratio,system productivity index(8.94)and net annual income(16418 yuan·ha-1)with the A8V2 mixture.Therefore,it is recommended that oat and common vetch mixtures planted at a ratio of 8∶2 should be promoted in the Ningxia Yellow River Irrigation Area.关键词
燕麦/箭筈豌豆/混播草地/生产性能/种间竞争Key words
oat/common vetch/mixed grassland/production performance/interspecific competition引用本文复制引用
冯琴,何小莉,王斌,王腾飞,倪旺,马霞,明雪花,邓建强,兰剑..宁夏引黄灌区燕麦与箭筈豌豆的混播效果研究[J].草业学报,2024,33(3):107-119,13.基金项目
宁夏高等学校一流学科建设(草学学科)项目(NXYLXK2017A01)和"一年两熟"人工草地可持续发展模式研究与示范项目(2020BBF02001)资助. （草学学科）
