Wild imitation method for artificially improving germination rate of natural taxus chinensis var mairei population seeds and promoting seedling renewal

Abstract

The invention provides a wild imitation method for artificially improving the germination rate of natural taxus chinensis var mairei population seeds and promoting seedling renewal, and relates to the technical field of seedling raising. According to the wild imitation method, in the process of artificially promoting natural taxus chinensis var mairei population recovery, taxus chinensis var mairei seeds stored in sand for one year are sown on the ground without herbaceous layers and with dry branches and fallen leaves removed, and earthing is conducted for 2-6cm. It is proved in the embodiment that the germination rate of the seeds can be remarkably increased (the germination rate of a control group is 0%) by sowing and earthing on the ground without the herbaceous layers and with the dry branches and the fallen leaves removed, and the germination rates of the seeds with the soil covering thicknesses of 2cm, 4cm and 6cm can reach 1.57%, 3.57% and 2.28% respectively. The wild imitating method disclosed is extremely important for promoting near-natural germination and updating of seeds of the natural taxus chinensis var mairei population and recovering and expanding of endangered natural populations.

Description

technical field [0001] The invention belongs to the technical field of seedling cultivation, and in particular relates to a wild-like method for artificially increasing the seed germination rate of natural southern yew populations and promoting seedling renewal. 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 the southern yew mainly focuses on genetic improvement, optimized cultivation, extraction of medicinal ingredients, community structure, etc. There is no research on artificially promoting the natural southern yew population recovery model based on near-n...

AI Technical Summary

Problems solved by technology

The current research on the southern yew mainly focuses on genetic improvement, optimized cultivation, extraction of medicinal ingredients, community structure, etc. There is no research on artificially promoting the natural southern yew population recovery model based on near-nature

[0003] The fruit of the southern yew is bright in color and delicious, and it is easy to attract birds and rodents to eat and spread the seeds. At the same time, a large number of seeds are eaten and lose their vitality.

And the southern yew seeds contain germination inhibitors such as ABA, GA, IAA and ZR. The content of these inhibitors in the seeds decreases with time, so that the natural germination process of the seeds will go through two winters and one summer. It is easy to make the seeds of the southern yew lose water and lose their vitality. These characteristics of the seeds of the southern yew lead to an extremely low germination rate under natural conditions

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