Uneven-aged mixed plantation method of pine trees and broad-leaved trees

A technology of broad-leaved trees and pine trees, which is applied in the field of mixed crossing of pine trees and broad-leaved trees of different ages, and can solve the problems of poor mixed effect, high afforestation cost, and slow growth of Masson pine

Inactive Publication Date: 2017-01-11
GUANGXI FORESTRY RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, my country has carried out some mixed-breeding experiments between tree species and Pinus massoniana, but they all adopt conventional methods such as inter-row mixed, banded mixed and block mixed, and most of them are mixed with the same age, which causes the mutual influence of mixed forest species, not only The mixed effect has not been achieved, and the growth of the main tree species has been significantly inhibited, the mixed effect is poor, the cost of afforestation is high, and ...

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  • Uneven-aged mixed plantation method of pine trees and broad-leaved trees

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Experimental program
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Effect test

Embodiment 1

[0040] Implementation site: Zhenlong Forest Farm

[0041] Situation before the mixed-breeding: Zhenlong Forest Farm’s three-in-one field covers an area of ​​230 mu. The masson pine young forest (materials from Guangxi Forestry Academy’s excellent family seedlings of masson pine) built in July 2012 has a preservation rate of 56-85%, and the average tree height is About 1.75m.

[0042] In the rainy season in March 2015, red cones and lattice trees (one-year-old seedlings cultivated by Guangxi Academy of Forestry) were mixed in the pure forest of Pinus massoniana. Randomly plant different proportions according to the existing masson pine preservation conditions (number of dead masson pine plants): about 35% of red cones and 15% of lattice trees.

[0043] In July 2015, the statistical data and on-site observation of the mixed forest showed that the effect of the mixed forest had begun to show, and the growth of masson pine and red cone had increased. The overall appearance has b...

Embodiment 2

[0045] Implementation location: Oudong Forest Farm

[0046] The masson pine forest before mixed, planted in 1964, the current storage density is 15 trees / mu, the average diameter of the masson pine is more than 35cm, the average tree height is more than 25m, the forest is neat, the canopy density is high, but the canopy is sparse.

[0047] In March 2005, a 13-month-old Quercus japonica was used for a mixed experiment in Miaoling. The planting density of Quercus japonica was divided into 200, 150, 100, and 50 plants / mu (respectively, the test numbers were 1, 2, 3, and 4). Taking the pure forest of Pinus massoniana without mixed hybridization as the control (experiment number 5), 4 replicates were set for each density, and the area of ​​each sample plot was 660m 2 , there is no protective line between the plots.

[0048]According to the analysis of the survey data in March 2015, after 10 years of mixed afforestation, except for the masson pine volume in experiment 1 which was l...

Embodiment 3

[0052] Implementation location: Forest shift 10-35 of Huashan Forest Farm

[0053] The pure forest of slash pine was planted in 2005, and the stand density was 70-90 trees / mu, and mixed in April 2016.

[0054] Choose sweetgum, oak oak, red cone, Milaopai, lotus tree, nannan, and birch as mixed tree species, and choose 1-3 different mixed tree species for different stands, as follows:

[0055] In stand 1, 70 pine trees / mu were preserved, and the total number of trees after mixed crossing was 110 / mu, and the number of mixed sweetgum, oak, and red cone was 20, 10, and 10, respectively.

[0056] In stand 2, 80 pine trees / mu are preserved, and the total number of pine trees is 120 / mu after mixed, 20, 10, and 10 trees of mixed lotus, nannan, and birch, respectively.

[0057] In stand 3, 75 pine trees / mu were preserved, and the total number of pine trees after mixed crossing was 115 trees / mu. The number of mixed red cones, Milaopai and sweetgum were 20, 10 and 10 respectively.

[0...

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Abstract

The invention discloses an uneven-aged mixed plantation method of pine trees and broad-leaved trees. Suitable mixed plantation trees are selected at places where plants do not survive in a pure pine tree forest according to different site conditions; 1 to 3 types of mixed plantation tree seedlings are randomly planted according to a certain ratio. According to the method provided by the invention, the suitable trees with relatively high economic value are subjected to mixed plantation through utilizing a natural law that part of the plants do not survive in a pine tree forest growth process, and protection and acceleration effects on the broad-leaved trees of the pine trees are expressed, so that the planting survival rate of the broad-leaved trees under the different site conditions can be improved, and the forestation effect of a mixed plantation forest is remarkably improved; the forestation cost of the mixed plantation forest is reduced and the forestation time of the mixed plantation forest is shortened. Practice shows that a masson pine pure forest can be effectively modified into the mixed plantation forest, and the mixed plantation trees adaptive to a masson pine planting region can be selected from castanopsis hystrix, erythrophloeum ferdii, castanopsis fissa and the like. Therefore, the method has relatively strong practicability and operability, has a good popularization and application prospect, and has relatively good economic benefits and ecological benefits.

Description

technical field [0001] The invention belongs to the field of tree cultivation, and in particular relates to a method for mixing pine trees and broad-leaved trees of different ages. Background technique [0002] Pine is the most important fast-growing and high-yielding timber forest tree species in southern China, and has made great contributions to the area of ​​fast-growing and high-yielding timber forests, standing stock and timber production in southern my country. However, the early management of pine plantations was mainly based on timber output, and the management method was pure pine plantation forests, and a large part of the stand structure was poor, the composition of the forest ecosystem declined, the understory vegetation was scarce, and the forest soil was seriously damaged. Compared with the same zone of evergreen broad-leaved forest, the forest has a single landscape, low biodiversity, poor stability, and poor resistance to forest fires and pests and diseases....

Claims

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Application Information

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IPC IPC(8): A01G23/00A01G17/00
CPCA01G17/005A01G23/00Y02A40/22Y02P60/40
Inventor 杨章旗唐生森陈虎吴东山颜培栋
Owner GUANGXI FORESTRY RES INST
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