Liriodendron forest seedling cultivation method

A cultivation method and technology of forest tree seedlings, applied in the field of plant resource protection and utilization, can solve the problems of inconsistent seed maturity time, long rooting time, increased cost of forest tree seedlings, etc., to increase water holding capacity and air permeability, and promote growth and strong roots, increase the effect of transplanting survival rate

Active Publication Date: 2020-11-20
INST OF BIOLOGICAL RESOURCES JIANGXI ACAD OF SCI +1
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AI Technical Summary

Problems solved by technology

[0003] At present, the cultivation of tree seedlings of Liriodendron genus mainly includes seed breeding and branch cutting. However, due to the physiological and genetic characteristics of the tree species itself, these two seedling cultivation methods have shown great disadvantages.
The embryonic rate of the winged seeds of Liriodendron species is only 1% to 3%, and having embryos cannot guarantee normal germination, so its germination rate is extremely low; in addition, the prior art is all artificial seed collection, because Liriodendron The genus tree species belong to tall trees, and the aggregated fruits are mostly located in the middle and lower parts, and the nutrient supply and sunlight exposure of the middle and lower branches are insufficient, resulting in poor development of seeds in the aggregated fruits, and the maturity time of the seeds in the aggregated fruits is inconsistent, resulting in the growth of Liriodendron species. Germination rate is very low
The use of branch cuttings for vegetative propagation is a relatively common method of seedling cultivation on forest trees, but Liriodendron genus species, whether it is hard branch cuttings or young branch cuttings, show many problems such as difficult rooting, long rooting time, less rooting, and difficulty in transplanting. question
In addition, the use of branch cuttings for seedling cultivation has higher requirements for cultivation facilities and management techniques, which will greatly increase the cost of tree seedling cultivation

Method used

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Examples

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Embodiment 1

[0042] In 2017, an experiment was carried out in Yangxi Town, Anfu County, Ji'an City, Jiangxi Province, in a mixed Asian and American mandarin forest. It is 37.43cm, the slope of the forest land is about 7°, and the area is about 20 mu. This time, 10 mu of forest land were used for forest seedling cultivation, and the remaining 10 mu of forest land was used as a control. The control forest land was not subjected to any treatment. Treat the woodland according to the following steps: thinning at the beginning of February, removing some unsuitable and poorly growing trees and other miscellaneous trees. After thinning, the forest canopy density is about 55%, and the side branches below 3m are pruned , thinning is carried out every 4 years; ditching, fertilization and soil covering work are carried out at the end of February. The depth of ditching is 35cm, and the application rate of potassium sulfate compound fertilizer is 50kg / mu; 45cm, and the miscellaneous irrigation and stone...

Embodiment 2

[0049] In 2016, an experiment was carried out in a mixed Asian American mandarin tree forest in Maquan Town, Yujiang District, Yingtan City, Jiangxi Province. The Asian American mandarin tree forest is 16 years old, the forest density is about 60 trees / mu, and the average tree height is 25.53m , with an average diameter at breast height of 32.26cm and an area of ​​about 2000 mu. In this experiment, 30 mu of forest land was selected for the forest seedling cultivation test, and the slope of the selected forest land was about 12°. Three treatments were set up in the experiment: ①The woodland in Example 2 was treated according to the method of Example 1; ②CK1 was only treated with thinning and pruning, and the forest land soil was not treated; ③CK2 was not treated at all. In February and October 2017, and in February and October 2018, 20m×20m quadrats were set up to investigate the emergence of seedlings at the beginning of the year and the storage of seedlings at the end of the y...

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Abstract

The invention belongs to the technical field of plant resource protection and utilization, and particularly relates to a liriodendron forest seedling cultivation method. The liriodendron forest seedling cultivation method comprises the following steps: directly utilizing forest land resources, and performing intermediate cutting, pruning and fertilization to increase nutrient supply and photosynthesis of seed trees and to improve the seed quality; ploughing soil under the forest, mixing the fallen leaves of liriodendron tree species into the soil, keeping the looseness and air permeability ofthe soil, and promoting the germination of the seeds; spreading the agricultural water-retaining agent and rice chaff ash to improve the water holding capacity and the air permeability of the soil andto reduce the irrigation cost; and finally, spraying a foliar fertilizer to promote seedling growth and root strengthening and to increase the transplanting survival rate. The liriodendron forest seedling cultivation method provided by the invention is high in seedling emergence rate, simple and feasible, capable of saving land, low in technical difficulty and convenient to popularize, and has agreat promotion effect on protection and utilization of genetic resources of the liriodendron tree species and rapid development of forestry economy of the liriodendron tree species.

Description

technical field [0001] The invention belongs to the technical field of protection and utilization of plant resources, and in particular relates to a method for cultivating tree seedlings of the genus Liriodendron. Background technique [0002] Liriodendron genus is a tree species of Magnoliaceae. This tree species is a relic species of the Tertiary Period. It is a relatively ancient tree species and has been listed as a national second-class rare and endangered tree species. Liriodendron, as the remaining and endangered dual-species genus on the earth, is considered as the original group of angiosperms. In addition to being used for hybrid breeding, it is also of great value for studying the origin, distribution and phylogeny of flowering plants. In addition, the leaf shape of Liriodendron genus is peculiar and beautiful. It is a precious ornamental tree species in parks and urban greening. It can also be used as garden shade tree and street tree. The palm tree species are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01C21/00A01B79/00C05G1/00
CPCA01G17/005A01C21/005A01B79/00C05B1/02C05C9/00C05D1/02C05D9/02
Inventor 吴照祥欧阳承智肖平江王俊泊余发新
Owner INST OF BIOLOGICAL RESOURCES JIANGXI ACAD OF SCI
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