定植期对夏季切花小菊生育期和品质的影响

以3个切花小菊品种为材料,研究定植期对切花小菊夏季生产生育期和外观品质的影响.结果表明:不同定植期时切化小菊生育期和外观品质影响显著,5月初定植的切花小菊开花最快;品种之间有差异,从定植到开花,清露在5月初定植只需85 d,而自蜂窝在6月初定植需108 d.4月初定植的切花品质最高,随定植期的推迟,株高降低、冠幅缩小、茎粗和节间长减少,但花径变化因品种不一.证明江苏北部能够实施优质切花小菊的夏季生产,而最适定植期心在4～5月间.

Effect of different planting date on phenophase and quality of spray cut chrysanthemum produced in summer

Effect of different planting date on phenophase and external quality was studied in three spray cut chrysan themum cultivars.The results showed that different planting date significantly affected the phenophase and external quality of spray cut chrysanthemum.Plants planted in early May in general flowered earliest compared to plants planted in early April and June.From planting to flowering,the cv.Qinglu planted in early May only took 85 days,while the cv.Baifengwo planted in early June took 108 days.The external quality was best in plants which were planted in early April.Plant height,canopy diameter,stem diameter and internode length decreased with the delay of planting date.But effect of planting date on flower diameter was cultivar-dependent.The present study indicated that spray cut chrysanthemum can be produced in the north of Jiangsu province in summer and the optimal planting date is between April and May.