几种牧草在分枝/分蘖期对不同水位胁迫的生长反应  

Responses of Growth of Several Kinds of Forages at Branching/Tillering Stage to Stress of Different Groundwater Levels

作　　者：徐桂花 刘水华 戴征煌 黄栋 胡文婷 于徐根 甘兴华 XU Gui-hua;LIU Shui-hua;DAI Zheng-huang;HUANG Dong;HU Wen-ting;YU Xu-gen;GAN Xing-hua(Animal Husbandry Technique Extension Station of Jiangxi Province,Nanchang 330046,China)

机构地区：[1]江西省畜牧技术推广站,江西南昌330046

出　　处：《江西农业学报》2018年第10期32-35,共4页Acta Agriculturae Jiangxi

基　　金：江西省农牧渔业科研项目(NY201018)

摘　　要：采用盆栽法对多花黑麦草、燕麦、小黑麦(冬牧70)、饲用豌豆、紫云英、箭筈豌豆、毛苕子分别进行距离种植土面5 cm、10 cm、15 cm水位处理,以观测7种牧草在不同水位处理下的生长情况。研究结果表明:随着土壤水位的升高,各种牧草的株高、分枝/分蘖数、地上生物量、地下生物量均逐渐降低;在土壤地下水位处于5 cm和10 cm时,牧草的产量显著下降;饲用豌豆和箭筈豌豆的茎叶比随着土壤水位升高而呈上升趋势,而其他牧草则呈下降态势。A pot experiment was carried out to observe the growth of 7 forage grass species [ Italian ryegrass （ Lolium multiflorum） , oat （Avena sativa） , triticale （Dongmu 70） , forage pea （ Pisum arvense） , milk vetch （ Astragalus sinicus） , commonvetch, and Vicia villosa] under the stress of different groundwater levels （5, 10, and 15 cm distance from the soil surface） . Theresults indicated that the plant height, branch / tiller number, aboveground biomass and underground biomass of all forages decreased gradually with the increase in the groundwater level. The yield of forage grasses decreased significantly when the groundwater level reached 5 cm or 10 cm. The stem-leaf ratio of forage pea and common vetch increased with the increase in the groundwater level, while that of the other forage grasses decreased gradually.

关 键 词：牧草 分枝/分蘖期 水位胁迫 生长反应 

分 类 号：S54[农业科学—作物学]