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Method for increasing survival rate of seedlings of true bud seedlings in taxus chinensis var mairei natural population

A technique for the survival rate of Taxus chinensis, applied in the field of seedling raising, can solve the problems of uninvestigated annual Taxus chinensis seedlings, blocked natural regeneration, and few seedlings, etc., and achieves the effect of promoting the research on recovery mode and improving the survival rate of seedlings.

Inactive Publication Date: 2021-04-09
EXPERIMENTAL CENT OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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Problems solved by technology

We surveyed 3 plots of 30m×20m in each of the 4 natural southern yew populations in Fenyi, Tonggu, Xinfeng and Wuyuan in Jiangxi, totaling 12 plots. No annual southern yew seedlings were found in any of the four natural southern yew populations, reflecting the natural southern yew There are very few seedlings in the Chinese fir population, and the survival rate is low, and the natural regeneration is hindered

Method used

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  • Method for increasing survival rate of seedlings of true bud seedlings in taxus chinensis var mairei natural population

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Experimental program
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Embodiment 1

[0021] In March, the southern yew seeds stored in the sand for one year were sown and covered with 4cm thick soil, and a total of 168 preliminary sample plots were set up (more preliminary experimental plots were specially set up so that sufficient experimental plots could be selected later). After the seeds germinated in late May, 41 experimental plots were selected, including 21 plots in the control group (without removing the herbaceous layer vegetation), and 20 plots in the experimental group (removing the herbaceous layer vegetation). The impact of the herbaceous layer on the survival rate of buds and seedlings of Taxus chinensis was studied comparatively, in order to study the method to improve the survival rate of sprouts and seedlings of artificial and natural Taxus chinensis populations, and promote the near-natural regeneration of natural populations.

[0022] (1) Selection of test site: The test was carried out in the natural concentrated distribution area of ​​Taxus...

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Abstract

The invention provides a method for increasing the survival rate of seedlings of true bud seedlings in a taxus chinensis var mairei natural population, and relates to the technical field of seedling raising. According to the method, after seeds in the taxus chinensis var mairei natural population germinate into seedlings, weeding is conducted 1-2 times from May to August. According to the method, no human intervention is carried out except weeding, proper removal of vegetation on the herbaceous layer is beneficial to survival of bud seedlings, the survival rate of the bud seedlings can be remarkably increased by removing the herbaceous layer (the average germination rate of a control group is 4.55%), and the survival rate of an experimental group is 78.07%, that is, the survival rate is increased by 73.52% compared with the control group ,and is 17.16 times of the survival rate of the control group; the survival rate of the taxus chinensis var mairei seedlings is greatly increased, near-natural updating of natural populations is facilitated, and research of a near-natural artificial promotion natural taxus chinensis var mairei population recovery mode is facilitated.

Description

technical field [0001] The invention belongs to the technical field of seedling cultivation, and in particular relates to a method for improving the survival rate of seedling seedlings in the natural population of Taxus chinensis. Background technique [0002] Southern yew (Taxus chinensis var.mairei), belonging to the large tree of Taxus genus Taxus, is a precious ornamental, timber and medicinal tree species, and is a rare and endangered gymnosperm under the first-class protection in my country. The natural forest of Taxus chinensis grows slowly, the population competitiveness is weak, the natural regeneration is hindered, and the population shows a trend of decline. The current research on Taxus chinensis mainly focuses on genetic improvement, optimized cultivation, extraction of medicinal ingredients, community structure, etc. There is no research on artificially promoting natural population recovery of Taxus chinensis based on near-nature, which is precisely to promote ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G13/00
CPCA01G17/005A01G13/00
Inventor 喻龙华厉月桥何平张华聪邓宗付
Owner EXPERIMENTAL CENT OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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