关键词: 中亚热带, 苹果新品种, 生物学特性, 生态反应

Abstract: 34 new and excellent apple varieties including early-maturing and high quality type, Golden delicious system, Delicious system (the 3rd~5th generation), Fuji system (the 2nd, 3rd generation), High quality and big fruit type which were chosen and introduced had been tested and studied for three years in the damp hot sparse irradiant Mid-subt ropics law rillig nosa region, Yongchuan Chongqing.The results show that all of 34 varieties grow and fructify well.Some varieties own characteristics of early-fruiting, high yield and advantage of supplying in off-season.7 varieties form flower-bud and fructify in the first year after field planting net.The productivity of OBIR-2T-47, ‘New Gala’ respectively come up to 2081.25kg/666.7m², 2039.63kg/666.7m² in the third year.Compared with temperate-zone main productive region, the maturing-period is 15~30 days in advance.The shortest growth period of fruit is only 45 days.Yong apple trees are characterized by larger vegetative grow th amount, more super long shoot, more shooting times as well as the fruiting habits of super long shoot repeatedly grow ing shoot and axillary flow er-bud.They constitute the structure basses of early fruiting and high yield.18 physiological, ecological and anatomical items of 10 varieties' fruit outw ard appearance, internal quality, resistance and adaptation were tested and analyzed.OBIR-2T-47, and ‘New Gala’ apple varieties among them are thought as first-choosing varieties which are suitable for this kind of ecotype region.

Key words: MID-S UBTROPICS, NEW APPLE VARIETY, BIOLOGICAL CHARACTERISTICS, ECOLOGICAL RESPONSE