紫花苜蓿/甜高粱间作下混收混贮对青贮品质的影响OA

[Objective]This study aims to clarify the effects of mixed harvest and mixed silage under forage inter-cropping on silage quality.[Method]Alfalfa and Sweet Sorghum were selected as experimental materials,and inter-cropping was carried out in Minqin County,Wuwei City,Gansu Province,in 2022.A combined harvesting and ensil-ing experiments was conducted at the time of harvest.The nutritional composition before and after ensiling,as well as the organoleptic and fermentation qualities post-ensiling,were systematically evaluated.[Result]The contents of WSC,NDF,and ADF in all post-ensiling treatments were reduced,and the RFV was increased.Compared with single silage,the CP content and RFV of Alfalfa+Sweet Sorghum mixed silage were higher than those of Sweet Sorghum single silage.Compared with Alfalfa single silage,the contents of WSC and LA in the mixed silage treat-ment were significantly increased,while the contents of pH,AN,AA,and PA were significantly decreased(P<0.05).At the same time,the sensory quality of mixed harvest and mixed silage was also better than that of Alfalfa single silage.[Conclusion]Alfalfa and Sweet Sorghum are directly mixed harvest and mixed silage after intercrop-ping,which can not only effectively preserve the nutrients of mixed silage,but also improve the fermentation quality of silage.