Plant growth regulator for raising seedlings of eucalyptus dunnii maiden by cutting and method for raising seedlings of eucalyptus dunnii maiden by cutting

Abstract

The invention belongs to the field of plant propagation and discloses a plant growth regulator for raising seedlings of eucalyptus dunnii maiden by cutting and a method for raising the seedlings of eucalyptus dunnii maiden by cutting. The plant growth regulator for raising the seedlings of eucalyptus dunnii maiden by cutting provided by the invention comprises a first plant growth regulator and a second plant growth regulator, wherein the first plant growth regulator comprises 3-indolebutyric acid and 1-Naphthalene acetic acid, with the concentration of 1g / L-1.6g / L; the second plant growth regulator comprises 3-indolebutyric acid and 1-Naphthalene acetic acid, with the concentration of 0.83mg / L-2mg / L. After the first plant growth regulator provided by the invention is dipped with eucalyptus dunnii maiden cutting slips, the second plant growth regulator is used for pouring to preserve moisture; the plant growth regulator is used for continuously stimulating eucalyptus dunnii maiden to root so that the rooting rate of eucalyptus dunnii maiden cutting seedlings is obviously improved; root systems of the eucalyptus dunnii maiden cutting seedlings are developed and the quality is good; the plant growth regulator is suitable for industrialized production of the eucalyptus dunnii maiden cutting seedlings and is beneficial to propagation of eucalyptus dunnii maiden.

Description

technical field [0001] The invention belongs to the technical field of plant propagation, and in particular relates to a plant growth regulator for Eucalyptus durn cutting seedling raising and a method for Eucalyptus durn cutting seedling raising. Background technique [0002] Eucalyptus dunnii Maiden, evergreen broad-leaved tree species, tall tree, five-year-old Eucalyptus dunnii has a diameter at breast height of 28cm, a tree height of 17m, straight trunk, luxuriant branches and leaves, and belongs to the double capsule of Eucalyptus in classification Subgenus (subgenuss mphyomyrtu) Blue Eucalyptus Group (section Maidenaria) multi-branched Eucalyptus (series Viminales), its native place is Australia, and natural forests are distributed in small areas in northeastern New South Wales and southeastern Queensland, Australia. At present, the natural forest area in New South Wales is about 800 hectares, with less than 82,000 trees, and the area and number in Queensland are even ...

AI Technical Summary

Problems solved by technology

The limitation of sowing propagation is that the seed yield of Eucalyptus dunen is very little, and the excellent provenances are all imported, and the emergence rate is low. Promotion creates restrictions

[0004] Cutting seedlings can solve the shortcomings of small output and uneven quality of sowing and reproduction to a certain extent.

For Eucalyptus duncens cutting seedlings, rooting difficulty and low survival rate are the technical bottlenecks in this field. Traditional cutting seedlings are mostly collected cuttings from March to May or early summer, and spring shoots are used to facilitate rooting of Eucalyptus dunen. The production season is short, and the grown The root system is underdeveloped, and generally there is only one tap root, which may easily cause Eucalyptus dunen's branches to fall to the ground and grow slowly in the first year, which will affect the quality of Eucalyptus dunne obtained, and the existing reports are still in the experimental stage, and no industrial production has been reported.

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