中国草地学报2025，Vol.47Issue(7)：83-95,13.DOI:10.16742/j.zgcdxb.20240402
高丹草与田菁不同行比带状种植模式下饲草产量与品质研究
Study on Forage Yield and Quality under Strip Planting Patterns with Different Row Ratios of Sorghum-sudangrass and Sesbania
摘要
Abstract
As a typical inland arid region,Xinjiang faces widespread soil challenges including desertifi-cation,salinization-alkalization,and fertility depletion,all of which significantly constrain high-quality for-age production.To explore suitable strip planting patterns for high-quality forage in this region,this research was conducted during 2023-2024 on moderately saline-alkaline soil in Southern Xinjiang using drip irrigation under plastic mulch with precision seeding above mulch.With sorghum-sudangrass(Sorghum bicolor×Sorghum sudanense)monoculture(MS)and sesbania(Sesbania cannabina(Retz.)Pers.)mono-culture(MC)as controls,four strip cropping patterns with different row ratios were established:2∶2(S2C2),4∶2(S4C2),4∶4(S4C4),and 6∶4(S6C4).Fresh forage yield,quality,and agronomic traits of sorghum-sudangrass were determined using conventional methods.The results showed that the optimal row ratio configuration significantly enhanced the agronomic traits of sorghum-sudangrass,while both for-age yield and quality in intercropping were improved.Under the S4C2 ratio,plant height of sorghum-sudangrass was the highest.The mixed fresh forage yield was also the highest,whose yield was 17.03%(P<0.05)higher compared with MS,with a two-year average of 127.16 t/hm2.Crude protein content,neutral detergent fiber and acid detergent fiber content under S4C2 were higher compared with MS,whereas the pH was the lowest.Total volatile fatty acid content was relatively higher,with a two-year average of 147.76 mmol/L.Dry matter disappearance rate of S4C2 was significantly higher compared with other treat-ments(P<0.05),with a 53.65 g/kg of two-year average.Maximum land equivalent ratio reached 1.22.Comprehensive evaluation revealed that the 4∶2 sorghum-sudangrass to sesbania strip intercropping ratio was the optimal recommended for application in arid desert oasis regions such as Southern Xinjiang.关键词
高丹草/田菁/带状种植/产量/品质Key words
Sorghum-sudangrass/Sesbania/Strip planting/Yield/Nutrition分类
农业科技引用本文复制引用
霍倩倩,宋洋洋,冯斌,段震宇,席琳乔..高丹草与田菁不同行比带状种植模式下饲草产量与品质研究[J].中国草地学报,2025,47(7):83-95,13.基金项目
自治区优质饲草产业技术体系(编号:XJARS-13-02) （编号:XJARS-13-02）
兵团人才项目(2024DB003) （2024DB003）
