香樟林下几种冷季型草坪草的适应性及其影响因子分析

Turfgrass Evaluation and Analysis of Factors Inhibiting Turfgrass Growth under Camphor Trees

为了筛选适宜香樟林下种植的草坪草品种,2005~2007年间,在上海金山5年生香樟(Cinnamomum camphora)林下进行了4个种8个材料(品种、品系和组合)的冷季型草坪草的适应性比较试验,结果表明:高羊茅(Festuca arundinacea)Plantation和草地早熟禾(Poa pratensis L.)Langara品种具有相对较强的适应性,但播后9个月草坪草大都消亡,草坪质量严重下降。为了分析香樟林下抑制草坪草生长的原因,以高羊茅Plantation品种种子为试验材料,以香樟落叶粉(粒径<2mm)、香樟林下土壤(香樟土)、在香樟土中加入质量比为33%的香樟落叶粉(1香樟落叶粉:2香樟土=m:m)、和香樟林外休闲土壤(休闲土,对照)为试验介质,分别在120和40μmol·m-2·s-1光合有效辐射光强(PAR)下的人工气候箱中进行了种子发芽试验。结果表明:介质与光强的互作效应对高羊茅种子的萌发与生长影响显著,在两种光照强度下风干60d后的香樟土与休闲土中的相比种子萌发率与植株高度均没有显著差异,但在香樟土中加入质量比为33%的香樟落叶粉则显著降低播种后28d的种子发芽率达19%~40%和...

For identification of turfgrass adaptation to the environmental condition under camphor trees(Cinnamomum camphora),eight materials(cultivars,lines,and blend) of four species of cool-season turfgrass were evaluated in a field study beneath the canopies of five-year-old camphor trees in Jinshan District of Shanghai China from 2005 to 2007.Results from the field study showed that:Plantation tall fescue(Festuca arundinacea cv.Plantation) and Langara Kentucky bluegrass(Poa pratensis cv.Langara) were relatively m...