A method for cultivating large seedlings in a container of elm

Abstract

The invention discloses a method for raising big ulmus szechuanica seedlings in containers. The method comprises the following steps of construction of a culture pond, selection of the containers, preparation of a medium, picking and treatment of seed fruits, precise seeding, bud seedling cultivation and management in the seedling stage, wherein the culture pond is sunken, the containers are nonwoven containers which are fabricated with extra care, and the medium is an optimized combined medium. Through precise seeding, seedling cultivation, tunnel tending and other technical means, it is ensured that all viable seeds are germinated, and the technical problems are effectively solved that ulmus szechuanica reproduction speed is low, the germination rate of seed fruits is low, and the seedlings are difficult to transplant. The within-year seedling yield and the within-year seedling quality of ulmus szechuanica are remarkably improved, the seedling raising cost is reduced, and the seedling raising efficiency is improved.

Description

technical field [0001] The invention relates to a method for cultivating large seedlings of Ulmus elm in a container, and belongs to the technical field of tree seedling propagation. Background technique [0002] Ulmus szechuanica belongs to the genus Ulmus of the family Ulmaceae, and is one of the precious ornamental and timber tree species in southern my country. Due to its limited provenance, poor natural regeneration ability, coupled with the influence of factors such as environmental deterioration and man-made destruction, this species is on the verge of extinction, and it is urgent to take artificial measures to rescue and protect it. The red fruit elm is tall and straight, with flat and delicate branches and leaves. It has a long growth period, leaves fall late, and leaves turn yellow in late autumn. Fruit bearing in spring, the core part is located in the middle of the samara, the upper end is close to the gap, light red, very ornamental value. [0003] Judging fro...

AI Technical Summary

Problems solved by technology

However, elm is a rare tree species, the parent tree resources are scarce, the growth is slow, and the fruit maturity period is short, so it is difficult to collect seeds, which brings certain difficulties to the conventional propagation of seedlings

At present, the source of seedlings in the market is in short supply, the production cycle is long, the cost of seedling cultivation is high, and the price of seedlings is expensive

Although the existing literature (Liu Jixiang et al., 2018) mentioned the seedling raising method of Ulmus rubra, the seedlings are susceptible to diseases, the seedling emergence rate is not high in the conventional process, and it is difficult to transplant, so it is difficult to meet the current vigorous garden production. The demand for large seedlings , there is an urgent need for a simple, fast, low-cost and high-efficiency method for raising seedlings