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Sequoia sempervirens seed seedling culture method

A seed and Sequoia technology, applied in the field of plant propagation, can solve the problems of low seed germination rate, seedling damping-off disease, low seedling rate and other problems, and achieve huge ecological and economic benefits, high seedling rate, root system developed effect

Inactive Publication Date: 2012-01-04
FLOWER RES INST OF YUNNAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortage of provenance has always restricted the popularization and application of North American Sequoia. Therefore, many domestic institutions have carried out research on its propagation and cultivation, but most of them focus on asexual reproduction such as cuttings and tissue culture. The seedling root system of North American Sequoia Well-developed, robust growth, long life span, strong adaptability, beautiful plant type, with incomparable advantages of clonal seedlings, but its seeds mainly rely on imports, the price is expensive, the germination rate of direct seeding is low, and conventional seedling methods are prone to seedling stage Damping-off disease (Rhizoctonia solani), the mortality rate is more than 10%~50%, and the seedling rate is low

Method used

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  • Sequoia sempervirens seed seedling culture method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A. After soaking the Sequoia sequoia seeds with clear water for 23 hours, soak the seeds with potassium permanganate with a mass concentration of 0.1% for 60 minutes, wash and drain the water;

[0025] B. Wrap the drained seeds in step A with a wet towel, accelerate germination at a temperature of 28°C and a light intensity of 2000Lx, and spray water on the towel every day to keep the towel moist until the germination rate of the seeds is 5%;

[0026] C. Spread the seeds of step B evenly on the wet perlite matrix;

[0027] D. On the wet substrate that is sowed with seed in step C, cover the wet perlite substrate, control and cover the thickness of the wet substrate to be 0.3cm, place it on the seedbed in the greenhouse, and set the shading rate above the seedbed to 70% Shade with a sunshade net, spray the substrate with clean water, and keep the substrate moist all the time, and cultivate the seeds until they emerge;

[0028] E. Spray the seedlings in step D with ...

Embodiment 2

[0031] A. After soaking the Sequoia sequoia seeds with clear water for 11 hours, soak the seeds with a sodium hypochlorite solution with a mass concentration of 2% for 20 minutes, wash and drain the water;

[0032] B. Wrap the drained seeds in step A with a wet towel, accelerate germination at a temperature of 20°C and a light intensity of 3000 Lx, and spray water on the towel every day to keep the towel moist until the germination rate of the seeds is 10%;

[0033] C. The seeds of step B are evenly spread on the wet substrate mixed with perlite and vermiculite, wherein the volume ratio of the mixed substrate is: perlite: vermiculite=2:1;

[0034] D. On the wet substrate that is sown with seeds in step C, cover the wet perlite substrate, control the thickness of the wet substrate to be 0.8cm, place it on the seedbed in the greenhouse, and set the shading rate above the seedbed to 90% Shade with a sunshade net, spray the substrate with clean water, and keep the substrate mo...

Embodiment 3

[0038] A. After soaking the Sequoia sequoia seeds with clear water for 18 hours, soak the seeds with a sodium hypochlorite solution with a mass concentration of 1% for 40 minutes, wash and drain the water;

[0039] B. Wrap the drained seeds in step A with a wet towel, accelerate germination at a temperature of 28°C and a light intensity of 1500Lx, and spray water on the towel every day to keep the towel moist until the germination rate of the seeds is 30%;

[0040] C. The seeds of step B are evenly spread on the wet substrate mixed with perlite and vermiculite, wherein the volume ratio of the mixed substrate is: perlite: vermiculite=1:1;

[0041] D. On the wet substrate that is sowed with seed in step C, cover the wet perlite substrate, control and cover the thickness of the wet substrate to be 0.5cm, place it on the seedbed in the greenhouse, and set the shading rate above the seedbed to 80% Shade with a sunshade net, spray the substrate with clean water, and keep the sub...

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Abstract

The invention provides a Sequoia sempervirens seed seedling culture method, comprising the following steps: processing seeds, accelerating germination, preparing a medium, sowing, managing in a young seedling period, preparing nutritive soil, transplanting, managing after transplantation and the like. Through carrying out the step of accelerating germination before sowing, light, temperature, moisture and air required for the germination of Sequoia sempervirens seed are provided, and seed germination percentage and neatness are improved; soilless seedling culture is adopted to effectively solve the problem of damping-off disease in seedling stage; and the proper nutritive soil and nutrient solution are reasonably applied, and diseases are effectively prevented, thereby achieving higher planting percent, and guaranteeing seedling quality.

Description

technical field [0001] The invention relates to a plant seed seedling raising method, in particular to a North American redwood seed seedling raising method, and belongs to the technical field of plant propagation. Background technique [0002] North American Sequoia ( Sequoia sempervirens ), also known as World Tree, Coast Redwood, Evergreen Redwood, California Redwood, belongs to the single-species plant of the family Pinaceae, and is a rare relic tree species in the world. It has the characteristics of being tall, evergreen, long-lived, high yield rate, and rapid growth. It is a famous fast-growing timber tree species and a huge sawmill industry raw material tree species. Its tree shape is beautiful, the tree is majestic, and it is evergreen in all seasons. It is suitable for solitary planting or group planting in lakesides and lawns. It has extraordinary momentum and is an excellent landscaping tree species. North American Sequoia has been cultivated in Shanghai, Hangz...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01C1/00A01G31/00A01G13/00
CPCY02P60/21
Inventor 桂敏王继华宋杰赵培飞龙江莫锡君周旭红陈敏卢珍红
Owner FLOWER RES INST OF YUNNAN ACAD OF AGRI SCI
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