Method for improving taiwania flousiana seed orchard preservation rate

Abstract

The invention relates to the field of nursery stock planting, in particular to a method for improving the taiwania flousiana seed orchard preservation rate. The method comprises the following steps: 1, taiwania flousiana seed orchard forest land preparation; 2, stock cultivation; 3, grafting method and time: grafting in a logging site and a nursery garden at the same time in the middle ten days of February to the last ten days of March in the next year after stock cultivation, wherein scion wood for grafting is taken from the upper portion of a taiwania flousiana, the scion wood is arranged in a cold water basin with the water depth of 2cm to be refreshed after being collected, the base portion of the scion wood is wrapped by wet grass or moss in a transportation process and ventilated, uniparental grafting is performed strictly according to a clone deployment diagram in grafting in the logging site, and cards are hung; 4, management after grafting. The method has the beneficial effects that the nursery stocks are cultivated and grafted at the same time in the logging site and the nursery garden according to the clone number, the missing-plant soil after-replacement of the grafting seedlings in the nursery garden is performed according to the seed orchard clone deployment diagram in the next year, the seed orchard preservation rate can be 97% or more after after-replacement, the nursery stocks grow evenly, and the orchard establishment effect is obvious.

Description

technical field [0001] The invention relates to the field of seedling planting, in particular to a method for improving the preservation rate of bald fir seed orchards. Background technique [0002] Taiwania flousiana belongs to the genus Taiwania Fousiaceae. It is a unique tree species in my country. It is a rare and precious tree species that is an ancient remnant of the world's Tertiary ancient tropical flora. It is one of the 8 tree species that have been introduced and cultivated in the "Seventh Five-Year" research project. According to historical records, Tushan was widely distributed during the Ming and Qing Dynasties to the Republic of China, with five geographical distribution centers including Taiwan, Northwest and Southwest Fujian, Southwest Hunan and Southeast Guizhou, Southwest Hubei and Northeast Sichuan, and Northeast and Northwest Yunnan. Due to the difficulty in reproduction of the bald fir, people often compare the bald fir with the fir of the same age (for...

AI Technical Summary

Problems solved by technology

However, due to the conditions at that time, the selection of excellent trees and the construction of seed orchards failed to achieve the expected results

[0005] At present, the construction of bald fir seed orchards generally adopts the method of planting rootstocks in the mountain field and grafting in the mountain field. The survival rate is low, generally 55%-65%, which has become a bottleneck restricting the production and afforestation of bald fir.