摘要
2000～2001年,采用Utah加权模型,先后对鲁西南地区常见的葡萄、桃和油桃、杏品种的需冷量进行了研究。结果表明:不同树种、品种的需冷量差异显著。葡萄的需冷量最高,为1010～1840c.u。桃和油桃最低,花芽为620～910c.u,叶芽为500～890c.u。杏介于二者之间,花芽和叶芽均为790～910c.u。各树种、品种的需冷量年际间均有差异。葡葡、杏不同品种需冷量的高低与本品种果实成熟期早晚的关系表现为成熟期早,需冷量低;成熟期晚,需冷量高。但桃树不同品种的需冷量高低与本品种的果实成熟期无明显相关关系,果实成熟期早,但需冷量较高的情况普遍存在。同一品种其花芽、叶芽的需冷量不一,基本趋势是花芽的需冷量高于叶芽。
Utah weighted model was used for estimating bud chilling requirements of cultivars in grapevine, peach, nectarine and apricot in south-west Shandong Province during 2000～2001. Chilling requirements for buds (both leaf and flower buds) were significantly different among different species and cultivars: that for grape were the highest (1010～1840c.u), for apricot lower (flower bud: 790～910c.u, leaf bud: 790～910c.u), for peach and nectarine the lowest (flower bud: 620～910c.u, leaf bud:500～890c.u). Moreover, the same cultivars needed different chilling rates significantly between different years. For grape and apricot, there was found a relationship between chilling requirement and fruit maturation: the earlier cultivars needed lower rate of chilling; but it was not so for peach and nectarine: many early cultivars required higher rate of chilling. It was also discovered that flower buds needed higher chilling rate than leaf buds, the basic tendency was true almost for the entrants.
出处
《落叶果树》
2002年第6期1-3,共3页
Deciduous Fruits
关键词
鲁西南地区
果树
需冷量
设施栽培
grape
peach
nectarine
apricot
chilling requirement
