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Method for promoting precocious flowering of industrial cannabis sativa and application

A technology of industrial hemp and early flowering, applied in the field of plant cultivation, can solve the problems of industrial hemp winter multiplication, long growth cycle, shortening industrial hemp growth cycle, etc., achieve high production application value and economic benefits, shorten growth period, The effect of promoting early flowering

Active Publication Date: 2021-07-13
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the technical problem that industrial hemp is difficult to proliferate in winter and has a long growth cycle under natural conditions, and provides a method for promoting the early flowering of industrial hemp, by artificially adjusting the light environment, changing the light intensity, and at the same time cooperating with the application of plant growth regulation agent, effectively shortening the growth cycle of industrial hemp

Method used

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  • Method for promoting precocious flowering of industrial cannabis sativa and application
  • Method for promoting precocious flowering of industrial cannabis sativa and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present invention takes the industrial hemp 'Longma No. 3' seed as an example to verify the effect of the method of the present invention, and the specific operations are as follows:

[0020] On October 24, 2020, the seeds of industrial hemp 'Longma No. 3' with luster, plump shape, and uniform size were selected, and the seeds were soaked in clean water for 16-24 hours to accelerate germination, and the water was changed 1-2 times during the period.

[0021] On October 25, 2020, the soaked seeds were sown in a deepened seedling tray, watered thoroughly, and placed in a light intensity of 100 μmol m -2 ·s -1 , photoperiod 16h / 8h, temperature 25 ℃ artificial cultivation indoor seedlings, conventional agronomic management measures are adopted during the seedling cultivation period to ensure that the growth environment is free from diseases and insect pests, and the water is sufficient. After the seedlings grow to the first pair of true leaves, the seedlings are thinned...

Embodiment 2

[0025] The difference between this embodiment and Example 1 is: In this embodiment, the potted seedlings after transplanting are placed in an artificial climate chamber equipped with LED quantum board fill light (model is: MOSO LSV-320B036) to cultivate, And adjust the light intensity to 180 μmol m -2 ·s -1 .

Embodiment 3

[0027] The difference between this embodiment and Example 1 is: In this embodiment, the potted seedlings after transplanting are placed in an artificial climate chamber equipped with LED quantum board fill light (model is: MOSO LSV-320B036) to cultivate, And adjust the light intensity to 80 μmol m -2 ·s -1 .

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Abstract

The invention discloses a method for promoting precocious flowering of industrial cannabis sativa and application. The method comprises the following steps: culturing the industrial cannabis sativa until a second pair of true leaves are expanded, transplanting the cultured industrial cannabis sativa into an artificial climate chamber, and adjusting the illumination intensity of a light supplementing lamp in the artificial climate chamber to be 30-180 [mu]mol*m<-2 >*s<-1 >, the photoperiod to be 12-14 h or 10-12 h, and the temperature to be 25+ / -1 DEG C; furthermore, spraying 200 mg / L of 6-BA and 50-200 mg / L of gibberellin to industrial cannabis sativa seedlings. According to the method, aiming at the problems that industrial cannabis sativa is difficult to propagate in winter and long in growth cycle under natural conditions, the growth cycle of the industrial cannabis sativa is effectively shortened by manually regulating and controlling the light environment, changing the illumination intensity and cooperatively applying a plant growth regulator. The time from sowing to the flowering period is only 50 days, precocious flowering and fruiting are achieved, the purpose of shortening the growth period of industrial cannabis sativa is achieved, and the method is low in cost, easy to operate and high in success rate and has extremely high application value and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and in particular relates to a method and application for promoting early flowering of industrial hemp. Background technique [0002] Cannabis (scientific name: Cannabis sativa L.) is an annual herbaceous plant belonging to the genus Moraceae of Urticaceae. Cannabis includes industrial hemp, medicinal hemp, and recreational hemp. In recent years, industrial hemp has been widely used in textile, construction, medical, daily chemical and other fields, and its fibers and secondary metabolites have high economic value. At present, the cultivation of industrial hemp in my country is mostly concentrated in Yunnan and Heilongjiang. Industrial hemp likes light, and the optimum growth temperature is 25-30°C. Yunnan has short sunlight and insufficient light intensity in winter, and Heilongjiang's winter temperature is too low. Under the influence of light and temperature, the winter expansion o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/00A01G7/04A01G7/06
CPCA01G22/00A01G7/045A01G7/06Y02P60/14
Inventor 刘立军李明月田瑞丰
Owner HUAZHONG AGRI UNIV
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