白三葉水浸液對(duì)高羊茅種子的化感作用學(xué)士學(xué)位論文(已修改)
2025-07-10 11:50 本頁(yè)面
【正文】 東北農(nóng)業(yè)大學(xué)學(xué)士學(xué)位論文 白三葉對(duì)高羊茅種子萌發(fā)和幼苗生長(zhǎng)的影響 所在學(xué)院：園藝學(xué)院所學(xué)專(zhuān)業(yè)：園 林 研究方向：園林植物 Northeast Agriculture University Bachelor Degree Dissertation No:A02090032Effect of Trifoliurn repens L. on the Seed Germination and Seedling Grpwth of Festuca arundinaceaUndergraduate:Tutor: Department: Department of Landscape Architecture, College of HorticultureMajor: Landscape ArchitectureField: Landscape PlantNortheast Agricultural UniversityHarbinChinaJune 2013II白三葉的化感作用對(duì)高羊茅的影響摘要白三葉(Trifolium repens L.)原產(chǎn)歐洲，是世界上分布最廣的豆科植物，從北極邊緣到赤道高海拔地區(qū)都有分布。白三葉開(kāi)始主要用作牧草，近幾年人們逐漸認(rèn)識(shí)到白三葉草坪的美觀、整潔的觀賞價(jià)值和經(jīng)濟(jì)環(huán)保的生態(tài)價(jià)值。白三葉在混播草坪中可以為其他草種遮陰固氮，因此，在很多地區(qū)將白三葉和高羊茅混播。有研究證實(shí)，白三葉對(duì)其他植物有化感作用，本研究主要對(duì)白三葉對(duì)高羊茅的化感作用做一些探討，以明確白三葉對(duì)高羊茅種子萌發(fā)和幼苗生長(zhǎng)的影響，為白三葉與高羊茅的混播提供理論依據(jù)。實(shí)驗(yàn)結(jié)果表明，白三葉水浸液對(duì)高羊茅種子的發(fā)芽率、發(fā)芽指數(shù)有抑制作用，且隨水浸液濃度的升高，抑制作用明顯加強(qiáng)；白三葉水浸液延緩了高羊茅種子的萌發(fā)進(jìn)程。而白三葉水浸液對(duì)高羊茅幼苗根長(zhǎng)和株高的生長(zhǎng)有促進(jìn)作用，且隨濃度的升高表現(xiàn)出先升高后降低的變化規(guī)律。高羊茅的不同生長(zhǎng)部位對(duì)白三葉水浸液的敏感程度也不同：當(dāng)白三葉水浸液濃度為10mg/ml時(shí)，對(duì)高羊茅地上部分的生長(zhǎng)促進(jìn)作用最明顯；當(dāng)濃度是50mg/ml時(shí)，促進(jìn)高羊茅根系生長(zhǎng)作用最明顯。關(guān)鍵詞: 白三葉。 高羊茅。 水浸液。 化感作用。 種子萌發(fā)。 幼苗生長(zhǎng)12AbstractWhite clover (Trifolium ) native to Europe,is the world39。s most widely distributed legumes are distributed from the edge of the Arctic to the equator at high altitudes. White clover is mainly used as pasture began in recent years,was only used as a lawn grass,people gradually realize that white clover lawn beautiful,clean ornamental value and ecological value of the economic environment. Mixture of white clover in the grass lawn in shade for other nitrogen fixation,so in the following areas will be white clover and tall fescue Mixture. Studies have confirmed that white clover plants to other allelopathy,this experiment focused on allelopathy of white clover to do some research,a clear white clover allelopathic effects on growth of tall fescue.By studying the different concentrations of white clover aqueous extracts of tall fescue seed germination rate,germination index and seedling height root length,hoping to clear out the white clover Trifolium repens Mixture lawn effects on tall fescuetall fescue grown white clover aqueous extracts of some degree of sensitivity of white clover and tall fescue Mixture provide a theoretical basis.Experimental results show that white clover aqueous extracts of tall fescue seed germination rate,germination index inhibition,and with the aqueous extract concentration,inhibited significantly strengthened。 while white clover water extracts of Festuca Mao seedling root length and height of the growth promoting effect,and with the concentration increased first and then decreased to show the variation. Tall fescue in different parts of white clover growing sensitivity of the aqueous extracts are also different: When the white clover flooding when the concentration of 10mg/ml, on tall fescue growthpromoting effect of the aerial parts of the most obvious。 when the concentration is 50mg / ml,to prom
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