A Cultivation Method for Improving the Root System Architecture of Jiangnan Chinese Fir Container Seedlings
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A technology of root system configuration and cultivation method, applied in botany equipment and methods, cultivation, preservation of human or animal bodies, etc., can solve problems such as low survival rate, slow recovery growth, few lateral roots, etc., and achieve increased germination area, The effect of increasing biomass and reducing the amount of substrate
Active Publication Date: 2019-11-12
GUANGXI FORESTRY RES INST
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[0004] The purpose of the present invention is to provide a cultivation method that promotes the growth of the lateral roots of Jiangnan oil fir seedlings, weakens the elongation of the main root, and comprehensively improves the root system configuration, so as to solve the problems of high packing rate, few lateral roots, and weak root system of the seedlings in the nursery that will lead to survival after afforestation. The problems of low rate, slow recovery and growth, and high intensity of management and maintenance work
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Embodiment 1
[0028] Embodiment 1, operate according to the following steps:
[0029] 1. Selection of container: The seedling cultivation container adopts a white non-woven bag with a specification of 9cm×12cm.
[0030] 2. Mix and prepare the seedling-raising substrate according to the following raw materials by weight: 35 parts of humus topsoil, 30 parts of crushed litter, 15 parts of biogas residue, 10 parts of decomposed animal excrement and 6 parts of perlite and mix them for later use.
[0031] 3. Root-cutting period of sprouts: After accelerated germination in the sand bed, when the height of the stem buds is ≥ 3cm and the young leaves are not unfolded, the roots are cut and transplanted.
[0032] 4. Preparation of root control reagent: take 5g of sucrose, add 1L of clear water to fully dissolve, and prepare a sucrose solution with a mass concentration of 0.5%; weigh 0.3g of 3-indolebutyrate potassium (IBA-K) soluble powder and 0.1g of α-sodium naphthalene acetate (NAA-NA) soluble po...
Embodiment 2
[0039] Embodiment 2, operate according to the following steps:
[0040] 1. Selection of container: The seedling cultivation container adopts a white non-woven bag with a specification of 9cm×12cm.
[0041] 2. The seedling-raising substrate is prepared by mixing the following raw materials in parts by weight: 30 parts of humus topsoil, 35 parts of crushed litter, 15 parts of biogas residue, 15 parts of decomposed animal excrement and 4 parts of perlite.
[0042] 3. Root-cutting period of sprouts: After accelerated germination in the sand bed, when the height of stem buds is ≥ 4cm and the young leaves are unfolded, root-cutting and transplanting are carried out.
[0043] 4. Preparation of root control reagent: take 10g of sucrose, add 1L of clear water to fully dissolve, and prepare a sucrose solution with a mass concentration of 1.0%; weigh 0.3g of 3-indolebutyrate potassium (IBA-K) soluble powder and α-sodium naphthalene acetate (NAA-NA) soluble powder 0.1g, dissolve with a s...
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Abstract
The invention discloses a cultivation method for improving the root system configuration of the Jiangnan oil fir container seedlings. The method mainly includes: 1) after accelerating the germination on the sand bed, cutting the roots when the stem buds grow to a height of 3.0-4.0 cm and the young leaves are not unfolded Transplanting; 2) root-cutting method of sprouts: cut off the root tip of the radicle of sprouts, leaving a root length of 3.0-4.0 cm; 3) root-controlling agent treatment: immediately transfer the root-cut seedlings to the prepared root promoting agent after root-cutting. Soak in the growth compound solution for 30 minutes; 4) Use wood vinegar solution for foliar topdressing at the seedling stage; 5) Promote lignification during the hardening stage of the seedlings. Through the combination of root control, the main root of Cedar chinensis seedlings can produce 2 to 3 thick lateral roots from the callus, forming a bifurcated or trifurcated root system configuration, changing the original "single root" characteristics. The diameter increased by 25.3% to 41.5%, the number of primary side roots increased by 15.51% to 70.81%, and the packing rate decreased to 3.0%. At the same time, due to the formation of forked roots, the germination area and stages of lateral roots increased, and the capillary roots were abundant, which finally achieved the purpose of promoting the growth of Chinese fir seedlings and improving the root system architecture.
Description
technical field [0001] The invention belongs to the technical field of agricultural production, and relates to a tree seedling raising technology, in particular to a cultivation method for improving the root system configuration of Jiangnan Chinese fir container seedlings. Background technique [0002] Jiangnan oil cedar (Keteleeria cyclolepis Flous) is an evergreen coniferous tree species endemic to southern my country. It is not only an excellent timber tree species, but also suitable for landscaping cultivation. At the same time, because of its strong adaptability, drought resistance, and fast growth, it is also an excellent tree species for mountain afforestation. At present, the breeding method of Cedar chinensis is light substrate container seedling cultivation. The main problems of this method are that the seedlings are seriously packed, the main root is small, the lateral roots are scarce, and the degree of lignification of the aboveground part is not enough. After t...
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