High-quality Cultivation Techniques for 5 ℃ Tulipa gesneriana in Winter

5℃郁金香冬季促成栽培优质丰产技术

Methods of overcoming self-incompatibility and cross-incompatibility in Tulipa

郁金香自交、杂交不亲和性克服方法的研究

The above results will provide scientific basis not only for establishment of natural taxonomic system of Tulipa L. , but also for domestication and hybridization of this genus in China .

以上研究结果，不仅为建立郁金香属的自然分类系统提供了重要的依据，还可为我国野生郁金香属植物的引种驯化以及杂交育种工作等提供重要的理论依据。

Observations on horticultural characters and growth and propagation of bulbs in different ecologic regions in 13 tulip ( Tulipa gesneriana ) varieties introduced from the Netherlands were made and two stable and four less stable varieties of tulip were selected . Practices of forcing into growth and lengthening growth period , cultural techniques , harvesting time of bulbs , and storage conditions of tulip were developed .

经对引进荷兰郁金香13个品种的园艺学性状和不同生态区鳞茎生长、繁殖的测定，筛选出2个稳定品种和4个尚稳定品种，研制了延长和提前郁金香生育期的措施、栽培技术要点、鳞茎采挖时间和贮藏条件，指出所筛选的稳定品种在天津（华北地区）中度盐碱地上能正常生长发育；

Growth regulators ( A1 , A2 ) could promote the flower buds differentiation of Tulipa gesneriana effectively . A1 was better than A2.Through treatment of A1 , the rate of flower of Tulipa gesneriana increased 40 % , the length of scape and flower diameter increased 11 cm and 3 cm respectively , the florescence was advanced for 10 d and the flower life was prolonged for 4 d compared with control .

生长调节剂（A1，A2）能有效地促进郁金香花芽分化，A1效果比A2显著，经A1处理后，开花率比对照提高40%，花茎长度增加11cm，花期提早10d，寿命延长4d.