混播草种及其比例对黔草4号鸭茅草地产量的影响

[目的]探明黔草4号鸭茅的混播草地组合与草地产量。[方法]以黔草4号鸭茅单播为对照,在贵州省德江县共和乡建植不同混播比例的鸭茅+白三叶+多年生黑麦草、鸭茅+白三叶+高羊茅、鸭茅+白三叶共9种混播草地处理,研究不同处理对牧草高度、产量、叶茎比、豆荷比的影响。[结果]鸭茅+白三叶+多年生黑麦草(2∶1∶1)草地的产量达101 610 kg/hm~2,极显著高于其他处理,同时叶茎比为2.98,草地质量好,为最优草种组合与混播比例。[结论]该试验为筛选适宜贵州黔草4号鸭茅草地建植的最佳草种组合和混播比例提供依据。

Effects of Different Mixed Seeding Grasses and Their Proportions on the Yield of Qiancao 4 Grassland

[Objective] To discuss the mixed sowing grass combination and grassland yield for Qiancao 4 Dactylis glomerato CV.Barula.[Method] With single sowing of Qiancao 4 as the control,we established nine mixed seeding grass treatments in Gonghe Village,Dejiang County,Guizhou Province,including different proportions of D.glomerato(Qiancao 4)+Trifolium repens+Lolium perenne,D.glomerato+T.repens+Festuca elata,D.glomerato+T.repens.Effects of different treatments on grass height,yield,legume-grass ratio and leaf-stem ratio were researched.[Result] D.glomerato+ T.repens +L.perenne (2:1:1) showed the highest yield (101 610 kg/hm2),which was extremely significantly higher than other treatments.Its leaf-stem ratio was 2.98 with high quality of grassland.This treatment was the optimal grass combination and mixed sowing proportion.[Conclusion] This research provides references for the screening of the optimal grass combination and mixed sowing proportion of Qiancao 4 in Guizhou Province.