摘要
对桃、李、梨、栗和银杏等８种水果和干果树种用不同施用方法施以不同浓度的多效唑。结果表明多效唑对这８个树种的生长均有不同程度的抑制作用，新梢变短，叶面积缩小。桃抑制程度最为强烈；李和梨较为缓和，抑制作用较弱；栗强烈反应出现在第２年。多效唑可促进桃和李花芽形成。桃幼树施用多效唑后坐果率下降，但成年桃和梨坐果率提高。树种间抑制作用开始、持续和消失时间各异。抑制作用消失后，后期出现补偿生长，年生长量增加。因此，有的树种需增加多效唑的施用浓度或施用次数才能起调控作用。
PP333 at different concentrations was
used in 8 economic species of trees sucha as peach, plum, chestnut and ginkgo in different
ways.Results showed that PP333, to various extents,had some retardant effect on elongation of
new growth and enlargement of leaf area in these 8 species,especially in peach followed by
plum,pear and chestnut trees.In chestnut,the effect was very obvious on new growth in the 2nd
year of zeatment.Floral bud form-ation was acce lerated in peach and plum with the treatment of
PP333,so was fruit set in adult peach trees,which was opposite to what was observed in young
peach trees.In addition,appearance,disappearance and duration of retardant effect of PP333
proceeded at the different time among species.Compensating growth usualy followed
disappearance of the retardant effect at the time of early growth.For some species,PP333 came
to effect only by increasing con-centration or by increasing times of treatment.
出处
《浙江林学院学报》
CSCD
1996年第3期255-262,共8页
Journal of Zhejiang Forestry College
基金
"九五"浙江省重点学科资助项目
关键词
多效唑
果树
生长
坐果
效应
PP333
plant growth retardants
fruit trees
economic plants
growth
fruit set
effect
