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山毛豆和白花扁豆分别是广西岩溶区适生的国家灌木和地方藤本牧草品种,为了探索适合岩溶区种植利用的“山毛豆+白花扁豆”藤-灌草地组合密度,种植了山毛豆和白花扁豆单播及混播组合共7个处理,进行了株高、数量、生物产量及相对总生物量的评定。研究结果表明,混播组合高度低于单播山毛豆株高(P<0.01);混播组合藤长长于单播白花扁豆(P>0.05);混播组合生物产量和相对总生物量均高于单播(P<0.01);藤灌草地白花扁豆数量大于单播(P<0.01),山毛豆数量小于单播(P>0.01),山毛豆/白花扁豆比例均大于1;综合分析,各处理以AB4综合生生性能最佳,生物产量显著高于其他处理(P<0.01),为26 777.78 kg/hm2,相对总生物量(RYV)达到2.02(P<0.01),山毛豆/白花扁豆比例1.96∶1(P>0.01),是岩溶区建植藤灌草地的较佳种植利用方式,为广西及西南八省石漠化治理和恢复植被提供了科学依据。
In order to explore the combination density of “Soybean germplasm + Siberian bean” + “rattan - shrub” grass suitable for planting and utilization in karst regions, the Soybean Germplasm with Soybean Germplasm and Siberian White Stem Bean are the suitable national shrubs and local forage grasses in karst area of Guangxi. White flower lentils unicast and mixed-sowing combination of a total of seven treatments, the plant height, quantity, biological yield and relative total biomass assessment. The results showed that the height of mixed-sowing was lower than that of monoculture sward (P <0.01). The length of mixed-sowing rattan was longer than that of single sowing white lentils (P> 0.05) (P <0.01). The numbers of white lentils in vines and shrubs were higher than those in unicentrous ones (P <0.01), and the number of Phyllostachys edulis was less than that of unicellular (P> 0.01) (P <0.01), 26 777.78 kg / hm2, relative total biomass (RYV) reached 2.02 (P <0.01), and the ratio of Shannidou / Baihua lentils was 1.96:1 (P> 0.01). It is a better way to plant vine shrub grassland in karst area, which provides a scientific basis for the management and restoration of rocky desertification in the eight provinces of Guangxi and Southwest China.