Study on Introduction and Cultivation of Tulip in the Northern Winter

Taking seven tulip cultivars which were introduced from Holland as test material,their botanical characteristics and phonological period were investigated and compared in the solar greenhouse.The results showed that‘Carola's' plants was the most of dwarf,leaf index was significantly less than other varieties,fragrance.‘World's legend' and ‘World's fire' flower diameter was larger,bright color,faint fragrance.‘Leen van de mark',‘Gander's rhapsody'and‘Negrita'had a better comprehensive proterties,especially the ‘Gander's rhapsody'flowering reached 15d.The draba,corolla,flower diameter,filament,pistil,inner and outer petal length,width of Parade were obviously superior to other varieties.