Seedling raising technology for camellia oleifera seed seedlings of extremely small population plants

Abstract

The invention relates to a seedling raising technology for camellia oleifera seed seedlings of extremely small population plants. The seedling raising technology comprises the following steps that naturally fallen mature fruits are collected in a natural population distribution place of Cinnamomum camphora, and manual extruding is carried out to remove aril to obtain seeds; mixed soil of humus soil and sandy soil is used as a matrix, carbendazim is used for blocking soil for disinfection, and the obtained matrix is used for manufacturing a seedbed in a greenhouse and is thoroughly watered for standby application; dry seeds need to be soaked in clear water before sowing, fresh seeds are not used, ditching is carried out on a seedbed during sowing, seed umbilicus faces downwards, one row of seeds are arranged in one ditch, soil covering outside the ditches is carried out again after one row of seeds is sown, and dibble seeding, leveling and pine needle or fallen leaf covering are sequentially carried out after sowing of the whole bed is completed; and proper indoor temperature, humidity and soil humidity are kept, conventional management is carried out until the seeds sprout, meanwhile, seedbed coverings are removed, the seedlings are transplanted into a nutrition bag when the seedlings grow to 4-5 true leaves, maintenance is carried out for 8 weeks, and outdoor seedling hardening is carried out for 26 weeks so as to be used for second field transplanting. Compared with a traditional artificial breeding method, the method has the advantages that the emergence rate is more than 4 times, and a technical support is provided for effectively saving the species.

Description

technical field [0001] The invention belongs to the field of biological technology, and in particular relates to a seedling raising technology of very small population plant seeds. Background technique [0002] Tea fruit camphor ( Cinnamomum chago ) is an evergreen tree of the genus Lauraceae (Lauraceae). This plant was published in 1992 by a famous plant taxonomist in my country, Professor Sun Bixing of Yunnan University and others, based on the specimens of Yangbi County, Dali Prefecture. The tea fruit camphor tree is tall and straight, with a dense crown and beautiful tree posture; its seeds are edible, rich in nutrition, and have great ornamental value and development and utilization value. Existing studies have found that Chaguo camphora is only distributed in the upper tributaries of the Lancang River and the upper tributaries of the Red River in Yunlong County and Yangbi County, Yunnan Province, in the moist evergreen broad-leaved forests of Zhongshan at an altitude ...

AI Technical Summary

Problems solved by technology

However, in the process of raising seedlings with traditional seeds, it was found that the seeds of Cinnamomum camphora are difficult to germinate, and the seedlings have high requirements on ecological conditions during the establishment period, and are very sensitive to changes in environmental temperature, humidity, and soil conditions, resulting in a low emergence rate.

Therefore, the traditional seedling cultivation method can hardly obtain a large number of seedlings of C. chinensis in normal growth. It is necessary to find a new artificial breeding technology suitable for this special species in order to change its near-threatened situation.

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