土壤、水分和光照对黄顶菊生长的影响

Effect of soil、water and sunlight on the growths of Flaveria bidentis(L.) Kuntze

作者研究了非生物因子如土壤、水分和光照对黄顶菊生长的影响。试验表明黄顶菊在弱碱性和碱性土壤中均能茁壮成长,对土壤肥力要求不严,但土壤肥沃更利于其生长;黄顶菊的日蒸腾量极强,抗旱能力中等,生长量与水分供应量并非呈正相关,土壤见干见湿或适度干旱有利于其生长;黄顶菊是一种强阳性植物,在自然光照下,植株高度及顶芽数明显高于遮光植株,且随着遮光率的增加,植株高度及顶芽数显著降低。

The author studied effect of soil、water and sunlight on the growths of Flaveria bidentis(L.)。The test proved:Flaveria bidentis(L.) can grow better in weak basic and basic soil,it is strict to the soil fertilization but it grows better in fertile soil; Flaveria bidentis(L.) can evaporate plenty of water daily, its drought-relief ability is middle, its capability of growth is not relative to water in soil directly,sometimes it grows better in dry condition ;Flaveria bidentis(L.) likes sunlight very much,its height and terminal buds are more in natural light than in shade,the more of shade, the less of height terminal buds。