不同灌草组合与行数比对多花木蓝灌草地牧草产量的影响
Effects of Different Shrub-grass Combinations and Rows Ratios on Forage Yield in Indigofera amblyantha-grass Land
张瑜 1杜春林 2罗天琼 1雷霞1
作者信息
- 1. 贵州省草业研究所,贵州 贵阳 550006
- 2. 贵州省畜牧兽医研究所,贵州 贵阳 550005
- 折叠
摘要
[目的]探明灌草组合和行数比对灌草地牧草产量的影响,为贵州中低海拔喀斯特地区多花木蓝灌草地建植与饲草生产提供依据.[方法]以黔南多花木蓝(I)、钻石T多花黑麦草(L)、宽叶雀稗(P)和WL525HQ紫花苜蓿(M)为试验材料,采用随机区组试验设计,研究 7种灌草组合(A1,I 13.50 kg/hm2+L 24.00 kg/hm2;A2,I 13.50 kg/hm2+P 9.00 kg/hm2;A3,I 13.50 kg/hm2+P 9.00 kg/hm2+M 7.50 kg/hm2;A4,I 13.50 kg/hm2+P 11.70 kg/hm2+M 3.00 kg/hm2;A5,I 13.50 kg/hm2+L 8.40 kg/hm2+P 8.10 kg/hm2+M 3.75 kg/hm2;A6,I 13.50 kg/hm2+L 12.00 kg/hm2+P 4.50 kg/hm2+M 7.50 kg/hm2;A7,I 13.50 kg/hm2+L 14.40 kg/hm2+P 4.95 kg/hm2+M 5.25 kg/hm2)和 5种行数比(B1,1∶3;B2,1∶2;B3,1∶1;B4,2∶1;B5,3∶1)处理,多花木蓝混播灌草地牧草产量的变化.[结果]灌草组合和行数比对灌草地的灌草产量构成和总产量均有显著影响.多花木蓝与 3种草本混播灌草地的总产量较高,其中,以A6 生产表现最好,为 15.25 t/hm2.多花木蓝与草本牧草以行数比B1(1∶3)或B2(1∶2)混播效果较好,牧草产量为 13.33 t/hm2 和 14.13 t/hm2.不同建植模式以A6B1 的总产量最高,为 16.66 t/hm2;A6B2(15.94 t/hm2)和A6B3(15.77 t/hm2)其次.[结论]牧草产量以灌草组合 13.50 kg/hm2 多花木蓝+12.00 kg/hm2 多花黑麦草+4.50 kg/hm2 宽叶雀稗+7.50 kg/hm2 紫花苜蓿按灌草行数比1∶3混播的最高,可作为贵州中低海拔喀斯特地区多花木蓝灌草地建植的适宜模式推广应用.
Abstract
[Objective]The effects of shrub-grass combinations and row ratios on forage yield in shrub-grass land were explored to provide the basis for establishment and forage production in I.amblyantha-grass land in the middle and low altitude karst area of Guizhou Province.[Method]Taking I.amblyantha cv.Qiannan(I),Lolium multiflorum cv.Diamond-T(L),Paspalum wettsteinii(P)and Medicago sativa cv.WL525HQ(M)as test materials,the randomized block experiment design was employed to study the variation in forage yield of 7 I.amblyantha-grass combinations(A1,I 13.50 kg/hm2+L 24.00 kg/hm2;A2,I 13.50 kg/hm2+P 9.00 kg/hm2;A3,I 13.50 kg/hm2+P 9.00 kg/hm2+M 7.50 kg/hm2;A4,I 13.50 kg/hm2+P 11.70 kg/hm2+M 3.00 kg/hm2;A5,I 13.50 kg/hm2+L 8.40 kg/hm2+P 8.10 kg/hm2+M 3.75 kg/hm2;A6,I 13.50 kg/hm2+L 12.00 kg/hm2+P 4.50 kg/hm2+M 7.50 kg/hm2;A7,I 13.50 kg/hm2+L 14.40 kg/hm2+P 4.95 kg/hm2+M 5.25 kg/hm2)with 5 row ratios of shrub-grass(B1,1∶3;B2,1∶2;B3,1∶1;B4,2∶1;B5,3∶1).[Result]Shrub-grass combinations and row ratios significantly affected the yield component of shrub and grass and total yield.The higher total yield was observed in shrub-grass land of I.amblyantha mixed with 3 herbaceous species,among which A6 performed the best with an average production of 15.25 t/hm2.The B1(1:3)and B2(1:2)of I.amblyantha:grass ratio had the best effect,with an average production of 13.33 t/hm2 and 14.13 t/hm2 respectively.Among different established patterns,A6B1 showed the highest total yield(16.66 t/hm2),followed by A6B2(15.94 t/hm2)and A6B3(15.77 t/hm2).[Conclusion]The shrub-grass combination of 13.50 kg/hm2 I.amblyantha+12.00 kg/hm2 L.multiflorum+4.50 kg/hm2 P.wetsfeteini+7.50 kg/hm2 M.sativa with 1∶3 of shrub:grass ratio can get the highest yield,which could be popularized and applied in the I.amblyantha-grass land establishment of the middle and low altitude karst area of Guizhou.
关键词
多花木蓝/黔南多花木蓝/灌丛草地/灌草组合/行数比/牧草/产量/喀斯特地区Key words
Indigofera amblyantha/I.amblyantha cv.Qiannan/shrub-grass land/shrub-grass combination/row ratio/forage/yield/karst areas引用本文复制引用
基金项目
贵州省科技计划项目(黔科合支撑[2020]1Y078)
国家牧草产业体系黔南综合试验站(CARS-34)
出版年
2024
国家科技期刊平台
NSTL
万方数据