Seeding and seedling raising method of Rhododendron mucronulatum

Abstract

The invention relates to a seeding and seedling raising method of Rhododendron mucronulatum, belongs to the field of plant cultivation study, and solves the problems such that germination rate is low and seedling rate is low. The method includes the steps of seed collection and treatment, seeding and seedling transplanting; to be specific, putting sterilized seeds at the room temperature of 20 DEG C to 25 DEG C for germination acceleration, sowing the seeds to a seedling tray in which sowing medium 10 to 15 cm thick is loaded, under the density 2500-3000/cm<2>, covering the seeds with plastic film, performing shading with a shade mesh at the temperature of 15 DEG C to 25 DEG C, under the humidity 80% and the light transmittance 40%, and keeping the surface of the sowing medium moist by means of wetting, performing thinning two times to three times after emergence of the seedlings, reserving the seedlings under the density of 800-1000/cm<2>, performing transplanting when each seedling grow 2 to 3 true leaves, performing transplanting twice before outplanting, and performing shading with a shade mesh, under the seedling stage humidity 70-80% and the light transmittance 60%. The method has the advantages that germination rate is up to 80%, seedling rate is up to 95%, the seedlings grow robust, and production cycle is short.

Description

technical field [0001] The invention belongs to the field of plant planting research, and in particular relates to a method for sowing and raising seedlings of rhododendron japonica. Background technique [0002] Blue Vitex Rhododendron ( Rhododendron mucronulatum var. mucronulatum ), is a perennial deciduous shrub of Rhododendronaceae, native to Northeast Asia, and found in the Korean Peninsula, China, Japan and other places. Rhododendron japonica has early natural flowering period, long flowering period, strong cold resistance, beautiful plant shape and gorgeous flower color. It is a famous plant for viewing flowers, leaves and shapes. It can be used for the greening of flower borders and flower beds, as well as for making bonsai, and can also be used as fresh cut flowers. Its flowers are edible and medicinal, and have the functions of relieving symptoms, reducing phlegm, and relieving cough. Therefore, Rhododendron japonica has high ornamental value and medicinal value,...

AI Technical Summary

Problems solved by technology

There are three kinds of existing methods for sowing and raising seedlings: directly sowing seeds in flower pots or seedbeds, using sprinkling and spraying watering methods to easily make the germinated seeds lodging; The long-term immersion of the seeding tray in water will easily lead to the lack of oxygen in the substrate, which is not conducive to the normal growth of seed germination and seedling roots; sow the seeds in a petri dish covered with filter paper, and transplant the seedlings after the seeds germinate. Because the germinated seeds are too small, Difficult to operate

In addition, traditional seedling transplanting methods rely more on seedling raising experience, and often have disadvantages such as low transplanting survival rate and unstable seedling rate.