中国草地学报2025，Vol.47Issue(10)：44-53,10.DOI:10.16742/j.zgcdxb.20250058
鄂尔多斯东北部苜蓿茬后复种饲用燕麦生产性能评价
Evaluation of the Production Performance of Forage Oats Following Alfalfa Harvest in the Northeastern Ordos Region
摘要
Abstract
To investigate the growth adaptability of ten forage oat(Avena sativa L.)varieties in con-tinuous alfalfa replanting fields in the northeastern Ordos and to identify high-quality varieties suitable for multiple cropping,ten representative forage oat varieties were selected based on preliminary screening.A randomized block design was employed to analyze and compare their growth period,agronomic perfor-mance,and nutritional quality.Partial least squares path model(PLS-PM)was further applied to examine the effects of varieties and harvest date on agronomic traits and forage quality,while the grey relational analysis method was used for comprehensive evaluation.The results showed that varieties reached the milk stage in approximately 70-80 days in the northeastern region of Ordos.Among varieties,'Sun God'and'Yellow Oat'exhibited significantly greater plant height(121.44 cm and 114.31 cm,respectively;P<0.05).'White Oat No.7'produced the highest hay yield(9414.79 kg/hm2),followed by'Yellow Oat'(9130.31 kg/hm2),both significantly exceeding other varieties(P<0.05).'Aiwo 256'had the highest crude protein(CP)content(12.14%DM),significantly higher than'Qingyin No.1'and'Leader(Surui)'(P<0.05).'White Oat No.7'showed significant lower acid detergent fiber(ADF)and neutral detergent fiber(NDF)contents than most varieties,except'Qinghai 444'and'Qingyin No.2'(P<0.05).Except for'Qingyin 2',the potassium(K)content of'White Oat No.7'was significantly lower than that of all other varieties,while its relative forage quality(RFQ)was significantly higher than those of other varieties(P<0.05).Across harvest dates,oats harvested on September 9th exhibited significantly greater plant height,hay yield,dry-to-fresh ratio,and RFQ,while CP,ADF,and K content were signifi-cantly lower compared to earlier harvests(P<0.05).In contrast,oats harvested on August 21st had higher CP,ADF and K contents but lower plant height,hay yield,dry-to-fresh ratio,and RFQ.Grey rela-tional analysis identified CP,NDF,and hay yield as key indicators for evaluating forage oat productivity.Overall,'White Oat No.7'and'Yellow Oat'demonstrated superior performance and were recommended for re-cultivation after alfalfa cutting in the northeastern Ordos.关键词
鄂尔多斯/复种燕麦/产量/品质/灰色关联/综合评价Key words
Ordos/Multiple cropping oats/Yield/Quality/Grey correlation/Comprehensive evalua-tion分类
农业科技引用本文复制引用
李文龙,李峰,倪苗,齐丽娜,杜波波,段建平,明霞,陶雅..鄂尔多斯东北部苜蓿茬后复种饲用燕麦生产性能评价[J].中国草地学报,2025,47(10):44-53,10.基金项目
内蒙古自治区科技重大专项(2023JBGS0014-04) （2023JBGS0014-04）
国家乳业技术创新中心项目(2022-科研攻关-1) （2022-科研攻关-1）
内蒙古自治区农牧业重大技术协同推广项目 （）
呼和浩特市科技创新领域人才项目(2022RC-产研院-2) （2022RC-产研院-2）
