Chimonanthus praecox flowering phase control method

Abstract

The invention provides a method for low-temperature induction control over the chimonanthus praecox flowering phase. The method for low-temperature induction control over the chimonanthus praecox flowering phase comprises the steps that chimonanthus praecox is placed under the temperature of 12 DEG C or below for low-temperature treatment, and when the cold amount reaches 570 CU, chimonanthus praecox buds can normal expand and bloom. According to the 'Utah model' and '7.2 DEG C model', the chimonanthus praecox flowering stage morphologic data can be observed and counted, meanwhile, the 'suxin'and 'qingkou' chimonanthus praecox variety blooming cooling capacities are preliminarily researched, and results show that the 'suxin' and 'qingkou' chimonanthus praecox variety blooming cooling capacities are 558 CU and 570 CU respectively. On the basis, 12-year-old robust potted 'suxin' chimonanthus praecox seedlings are subjected to different-low-temperature artificial induction treatment, andbuds treated under the temperatures of 4,8,12 DEG C can normally expand and bloom, wherein expand and blooming can be achieved when the cooling capacity under the temperature of 12 DEG C can reach 570 CU. the method can effectively control the chimonanthus praecox flowering stages, and the chimonanthus praecox can bloom ahead of the schedule or be postponed.

Description

technical field [0001] The invention relates to the field of regulating the flowering period of plants, in particular to a method for regulating and controlling the flowering period of Wintersweet. Background technique [0002] Wintersweet [Chimonanthus praecox (L.) Link] belongs to Chimonanthus praecox (L.) Link, which is a clustered, deciduous shrub of the family Chimonanthus. It has few pests and diseases and a long life span. It is a traditional ornamental precious flower with a long history in my country. Seven thousand years of application history. Its flowering period is from late November to March of the next year. It blooms in the middle of winter, fighting the cold and proud of the frost, with simple tree posture, elegant flower shape, and tranquil flower fragrance. The ornamental value, ecological value, economic value and social value of wintersweet are all very high. As the flower of December, it is the most prominent in the application of gardens. It can be pla...

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Problems solved by technology

[0009] The 'dynamic model' takes into account the negative effect of high temperature on relieving dormancy, and proposes a dynamic model for the offsetting effect of high temperature on low temperature, taking into account the different effects of the same temperature in the temperature cycle, that is, this model is not suitable for applications in colder or cooler winter climates. In warm areas, and the calculation of the dynamic model to estimate the cooling capacity is relatively complicated, and it is still relatively seldom used in China at present

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