关键词: 甜瓜, 设施栽培

Abstract: ‘Dongfangmi 3’，which is the F₁ offspring from the crossing between the maternal line M157-1 and the paternal line M55-1，is a newly developed early-to-medium ripen Hami melon hybrid cultivar. The fruit is oval shape with white skin and fine lines on the surface. The average single fruit weight is 2.0 kg. The flesh is orange with a thickness of about 4 cm. The flesh is crisp，delicate and juicy，with a good flavor，and the center soluble solids content is about 16%. The whole growth period of the spring cultivation season is about 110 d and that of the summer-autumn cultivation season is about 80 d. The fruit development period is about 40 days after flowering stage. The plant of‘Dongfangmi 3’shows moderate growth rate and good resistance to rainy，low temperature and weak light. Meanwhile，it is comprehensively resistant to diseases and easy to set fruit. It is suitable for planting in all kinds of facilities and protected cultivation，also suitable for open field cultivation in northern China regions.

Key words: melon, protected cultivation