Water culture seedling method for slash pine big tree needle fascicles
A technology of conifer bundles and slash pine, which is applied in the field of vegetative propagation of pines, can solve the problems of growth retardation and low survival rate, and achieve the effects of ensuring integrity, improving reproduction coefficient, and overcoming the phenomenon of partial crown or base germination
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Embodiment 1
[0041] A method for water seedling cultivation of large slash pine needle bundles, said method comprising the steps of:
[0042] (1) In the experimental forest of 8-year-old slash pine clones, select one excellent individual plant of two excellent clones 82-15 and 86-8, and put a sign on it; (2) Before the sap flow in early March, in the Select 2 to 3 side branches in the middle and lower part of the canopy that grow vigorously and have better light conditions in each excellent individual plant for pruning: first remove the other side branches except the main shoots of the first-level side branches or the second-level thick side branches from the blind branches of the previous autumn shoots. The branches are cut off, and the weak or poorly growing side branches are all cut off from the base of the growth, and then cut off at the spring-growing branches of the previous year on the main shoot, leaving only the 3 to 5 cm long base of the main shoot with conifer bundles, ensuring ...
Embodiment 2
[0044] A method for water seedling cultivation of large slash pine needle bundles, said method comprising the steps of:
[0045] (1) Through the measurement of the growth of the 9-year-old slash pine high-yielding resin family test stand, three excellent families G354, G367, and G73 were selected, and one excellent individual plant was selected respectively, and marked; (2) at the end of February, the sap Before the flow, select 2 to 3 side branches in the middle and lower part of the canopy for each high-quality individual plant that grow vigorously and have better light conditions for pruning. Cut off the blind branches of the autumn shoots in one year, and cut off the sick and weak branches at the same time, leaving only the 3-5cm long main shoot base with coniferous bundles, and ensuring that the branches grow robustly; (3) timely in April to May Erase weak or excessive buds to ensure that 2 to 3 strong buds grow quickly into new shoots; (4) When the buds grow to semi-lign...
Embodiment 3
[0047] A method for water seedling cultivation of large slash pine needle bundles, said method comprising the steps of:
[0048] (1) Select 3 individual plants in the 10-year-old American native slash pine provenance test forest; (2) Before the sap flows in mid-February, select 2-3 trees in the middle and lower parts of each excellent individual plant to grow Prune the side branches that are strong and have better light conditions. Cut off the main shoots of the first-level side branches and the second-level thick side branches from the spring branches of the previous year, and cut off the other side branches from the blind branches of the autumn shoots of the previous year, leaving only 3-5cm long branches. At the base of the main shoot with coniferous bundles, cut off diseased and weak branches at the same time; (3) Wipe out weak or excessive buds in time from April to May to ensure that 2 to 3 strong buds grow into new shoots quickly; (4) When The sprouts grow to semi-ligni...
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