国外伊藤杂种牡丹引进栽培示范研究

以从美国引进的16个伊藤杂种牡丹为试材,对其物候期、生物学特性及生态适应性等进行了观测研究.结果表明:伊藤杂种兼具牡丹与芍药的共同特征与优点,杂种优势明显,生长习性似芍药,花色、花形、花香似牡丹,芽、茎、根像芍药,叶光亮近革质,2～3回三出复叶,小叶具深或浅缺刻；极抗病虫,适应性强,长势旺盛,完全可以在洛阳的气候、土壤条件下正常生长；引进的所有品种均能开花,大多数品种丰花性好,花色丰富艳丽,株形饱满优美,叶丛潇洒美观,绿叶期长,具有极高的观赏价值；花期特晚且长,在洛阳为5月初至5月底,具有广阔的应用前景.

Preliminary Studing Report of Cultivating and Demonstrating Itoh Hybrids Introduced from Abroad

Using 16 Itoh hybrids peony from the U.S.as material,their phenology,biological characteristics and ecological adaptability were observated and studied.The results showed that the Itoh hybrids had features and benefits both of tree peony and herbaceous peony.They had the habit of growth like herbaceous peony;the colors,shapes and fragrant of the flowers like tree peonies;roots and stems like herbaceous peony.Their leaves were bright and nearly leathery.Their leaf shapes were between the shapes of peony and herbaceous peony.They were very diseases and insects resistant,had strong adaptability and grow rapidly.They could grow normally and all varieties could bloom in Luoyang.Most of the species had abundant flowers.Their flowers were very different in shape and color and their plant shapes were full and beautiful,and their chic and lovely green foliage lasts a long time.They had a very high ornamental value.Their florescence was very late and long in Luoyang from early of May to end of May.They had a very good prospect of application.