文献类型： 外文期刊

作者： Zhang Xinsheng ¹ ; Chen Hu ¹ ; Zhao Yuhua ¹ ; Fu You ¹ ;

作者机构： 1.Hebei Acad Agr & Forestry Sci, Changli Inst Pomol, Changli, Peoples R China

关键词： forcing culture;enforced dormancy;nectarine

期刊名称：2ND CONFERENCE ON HORTICULTURE SCIENCE AND TECHNOLOGY (CHST 2010)

ISSN：

年卷期： 2010 年

页码：

收录情况： SCI

摘要： Forcing culture of 'Zhongyou No.5' nectarine by enforced dormancy was studied in the heating greenhouse. The experiments conducted in this study include young tree training, accelerating flower differentiation, defoliation and dormancy releasing at low temperature, etc. Firstly. One-year-old seedlings without feathers were planted in seedling pots in greenhouse in early February. Pinching twice when shoots were 15-20 cm in length every time was necessary to build the compact structure. Until late May, 15-20 limbs were formed in a tree. Secondly, spraying 750ppm PP(333) twice from early June at 1-week interval could control tree growth and accelerate flower differentiation, and then stamens were formed in late August. Thirdly, hand defoliation and spraying 1% ZnSO(4) in late August were the most effective methods in dormancy release and development of flower buds. The last, through 35-day at low temperature (5-7 degrees C) in cold storage, tree dormancy was released. Trees breaking dormancy were planted in an automatic temperature-controlling greenhouse. After that, temperature was controlled at 18-20 degrees C until blossom and then 192 21 degrees C until post-blossom. Temperatures were controlled at 24-26 degrees C/12-14 degrees C( day / night) from post-blossom to fruit mature. It would take about 140 days from bud burst to fruit mature. The maturation of 'Zhongyou No.5' nectarine was put forward two months than ordinary forcing culture.