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Method for culturing Chinese fir cuttage container seedlings through light medium

A cutting container and cultivation method technology, applied in the field of forest cultivation, can solve problems such as unfavorable clonal seedling production or production cost, low reproductive coefficient per unit mother tree, seedling death, etc., and achieve excellent growth vigor of container seedlings and utilization of cuttings and fringes. The effect of high rate and stable inheritance of traits

Active Publication Date: 2016-09-07
ZHEJIANG FORESTRY UNIVERSITY
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only utilize rhizosphere sprouting tillers once a year, the propagation coefficient is not high, and the cutting rooting time is long, and only the yellow mud field cuttings can be used to produce bare-rooted seedlings, which cannot meet the needs of forestry production. Container Seedling Requirements
[0003] Use the nearly one-year-old rhizosphere shoots of Chinese fir for cuttings in winter or spring. It takes 2 to 3 and a half months to take root after cutting, and the mother tree of the cuttings only uses cuttings once a year. The reproduction coefficient of the unit mother tree is not high, which is not conducive to Large-scale production of excellent clone seedlings or increased production costs
[0004] In 2010, Zhang Tianyu et al. published "Experiments on Cedar Seedling Cultivation in Light Substrate Containers with Different Material Proportions", which disclosed the substrate screening test of Cunninghamia fir light substrate net bag seedling cultivation, showing that perlite: peat soil=1:4 treatment scheme is the best, but The easy-to-grow seedlings on light substrates in this document is a two-step seedling cultivation, that is, the cuttings survive first and then transplant the cuttings into light substrate containers, which not only increases the labor load and costs, but also easily causes the seedlings to die during the transplanting process.
[0005] Due to the difference between the rooting substrate and the seedling cultivation substrate, the high temperature in summer, the low survival rate of cuttings, and the difficulty in management of cutting seedlings under high temperature and high humidity, the high-efficiency cutting cultivation technology of Chinese fir in summer that integrates rooting of cuttings and cultivation of seedlings in one step No report

Method used

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  • Method for culturing Chinese fir cuttage container seedlings through light medium
  • Method for culturing Chinese fir cuttage container seedlings through light medium
  • Method for culturing Chinese fir cuttage container seedlings through light medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] From mid-June to early July, select healthy and disease-free sprouts with a length of 8-12 cm and a thickness of more than 0.4 cm to make cuttings with terminal buds with a length of 4-7 cm and retain a few leaves. The cuttings are treated with hormones and then cut into light substrates. Net bag, the substrate is peat: perlite: vermiculite: yellow mud = 1:1:1:1, the net bag is a 9cm*13cm non-woven bag with no bottom and no side, and the cutting depth is 2 / 3 of the length of the cuttings After planting, pour water thoroughly, cover and seal with shed film to keep moisture, and control the outside air temperature below 30°C through ventilation, mist spray and other means. After 21 days and 28 days, the rooting rate was counted, as shown in Table 1.

[0022] Table 1 Cutting Rooting Conditions Treated with Different Hormones

[0023]

[0024]

[0025] Remarks: The cutting hormone treatment time is 30s.

[0026] It can be seen from Table 1 that the 21-day and 28-day...

Embodiment 2

[0028] From mid-June to early July, select healthy and disease-free sprouts with a length of 8-12cm and a thickness of more than 0.4cm to make cuttings with terminal buds with a length of 4-7cm and retain a few leaves. The cuttings are dipped in 500ppm IBA solution at a medium speed Cuttings are then cut into different substrates. The depth of cuttings is 2 / 3 of the length of cuttings. After cuttings, water them thoroughly, cover and seal them with shed film to keep moisture, and control the outside air temperature below 30°C by means of ventilation and mist spraying. After 25 days, the rooting rate was counted, as shown in Table 2.

[0029] Table 2 Rooting situation of cuttings in different substrates

[0030]

[0031] Remarks: 1. After the matrix is ​​configured according to the volume ratio, it is divided into light matrix containers. The container is a 9cm*13cm bottomless and sideless flat-mouth non-woven bag.

[0032] 2. Substrate weight is dry weight.

[0033] As ca...

Embodiment 3

[0035] Remove the film from the cuttage seedlings that have taken root and survive in Example 2, and cultivate them for 10 to 15 days under a shade shed with a light transmittance of about 50% and a humidity of more than 80%, and increase the light transmittance to about 75%. In summer, 10:00- 16:00 Keep regular mist spray to cool down and moisturize. Start to add quick-acting fertilizer 15 days after the film is removed, and the rest are cultivated according to conventional container seedlings. At the end of December of that year, the seedling height and ground diameter of the cutting container seedlings were measured and counted.

[0036] During the cultivation of fir, due to the high temperature in summer, a large amount of spraying is required to cool down, so that the water supply is sufficient, and the cultivation substrate is required to have good water permeability, otherwise the seedlings will turn yellow or even die due to water accumulation in the container. Due to...

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Abstract

The invention discloses a method for culturing Chinese fir cuttage container seedlings through a light medium. The method comprises operation steps as follows: cutting preparation from coppice shoots from roots and necks of young Chinese firs, treatment with a growth regulator, preparation of the cuttage medium, culture and management after cuttage and the like. A Chinese fir light medium cuttage breeding technique used in summer is broken through and integrated with a light medium container seedling culture technique, cuttage container seedlings are formed once, the method has the advantages that the cuttage survival rate is high, the utilization rate of cuttings is high, the growth condition of the container seedlings is good and the like, the problem about one-shot culturing of the light medium container seedlings through cuttage is solved, clone light medium container seedlings are obtained, the light medium container seedlings are stable in genetic character and grow orderly and consistently, and the method has great application value and remarkable competitive advantages in large-scale breeding of good strains of Chinese firs and popularization and application of annual afforestation.

Description

technical field [0001] The invention belongs to the field of forest cultivation and specifically designs a method for cultivating fir light substrate cutting container seedlings. Background technique [0002] Since the 1970s, Chinese fir clone breeding has been carried out, and research on clonal breeding techniques such as Chinese fir cuttings, grafting, and tissue culture has been carried out successively. Seedlings become an effective means of breeding fine Chinese fir clones. However, this method can only utilize rhizosphere sprouting tillers once a year, the propagation coefficient is not high, and the cutting rooting time is long, and only the yellow mud field cuttings can be used to produce bare-rooted seedlings, which cannot meet the needs of forestry production. Department of container seedling requirements. [0003] Use the nearly one-year-old rhizosphere shoots of Chinese fir for cuttings in winter or spring. It takes 2 to 3 and a half months to take root after ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G9/10
CPCA01G22/00A01G24/00
Inventor 童再康楼雄珍张俊红黄华宏林二培
Owner ZHEJIANG FORESTRY UNIVERSITY
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