Physical control method for out-of-season blossoming of longans and culture container

Abstract

The invention relates to a physical control method for the out-of-season blossoming of longans and a culture container. The method comprises the following steps of: a preparation step: in which the culture container is put on an isolating layer, a drain pipe is arranged at the bottom of the culture container, and loosened culture media are put in the culture container; a transplanting step in which: longan seedlings are transplanted to the culture container; a pruning step: in which the branches of the transplanted longan seedlings are sheared short in each January to March from the next year after transplanting; a water control step: in which the relative water content of the loosened culture media is controlled between 14.11% and 21.46% until the leaf color of the bearing branches of longan trees turns green from vermilion; a water control drought processing step: in which the relative water content of the loosened culture media is controlled between 12% and 14% until the terminal bud leaf axils of the bearing branches of the longans show the appearance expression of flower bud differentiation; and a rewatering step: in which the relative water content of the loosened culture media is controlled between 35% and 40% until flowers wither. The out-of-season flower bud differentiation of the longans can be effectively induced by an appropriate drought processing means.

Description

technical field

[0001] The invention relates to the field of regulation of off-season flowering of woody fruit trees, in particular to a physical regulation method for off-season flowering of longan. Background technique

[0002] In my country and other subtropical regions, longan is an evergreen fruit tree that blooms once a year. After being induced by relatively low temperature (8-16°C) in winter, it produces flowers and fruits once a year in spring (that is, the normal flowering season). Two-flowered tropical longan varieties can achieve twice-a-year flowering and fruit setting, but after tropical longan varieties are introduced to subtropical regions for cultivation, the temperature cannot reach longan flower buds in non-low temperature seasons such as summer, autumn or even spring in subtropical regions. This relatively low temperature range of 8 to 16 °C required for induction is required, and it is easy to show the characteristics of one flower a year. To this end, ...

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