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Method for mixed plantation of Chinese fir and broad-leaved trees at different ages

A technology of broad-leaved trees and fir, which is applied in the field of tree cultivation, can solve the problems of high cost of afforestation, failure to achieve mixed effect, and failure to consider the rational allocation of forest stand space structure, etc.

Pending Publication Date: 2019-01-01
GUANGXI FORESTRY RES INST
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AI Technical Summary

Problems solved by technology

[0003] At present, some experiments on the hybridization of fir and broad-leaved tree species have been carried out in my country, but they all adopt conventional methods such as inter-row hybridization, banded hybridization, and block hybridization, and most of them are mixed hybridizations of the same age, not to mention the rational allocation of stand spatial structure , resulting in the mutual influence of mixed forest tree species, not only did not achieve the mixed effect, but also the growth of the main tree species was significantly inhibited, the mixed effect was poor, the afforestation cost was high, and the complementary role of mixed tree species could not be fully exerted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Implementation site: Guangxi State-owned Gaofeng Forest Farm

[0030] Stand condition before mixed: 25-year-old fir plantation pure forest stand, altitude 123m. The original planting density was 2m×2m. After 2 times of manual thinning, the average DBH of the remaining trees was 23.8cm, the tree height was 17.4m, and the stand density was 45 trees / mu. The stand angle scale was 0.61 according to the standard angle of 72°.

[0031] Technical implementation: select sunny weather and control the stand angle scale to 0.15 according to the standard angle of 72° to carry out the stand angle scale ratio, the plant spacing is 2.0-3.0m, and determine the planting position of the mixed tree, and the length, width and height are 40cm×40cm× The 35cm specification digs out the ridge. After the rain in March, mix the soil and apply 0.5kg of compound fertilizer with a total nutrient content of 40%, and plant 50 plants / mu of Gemu, Xiangzi Nan, and Liquidambar at a ratio of 5:3:2, and th...

Embodiment 2

[0034] Implementation site: Guangxi state-owned Daguishan Forest Farm

[0035] Stand conditions before mixed: 3-year-old fir plantation pure forest stand, 312m above sea level. The original planting density was 2m×2m, the average DBH of the retained trees was 4.9cm, the tree height was 4.2m, the stand density was 96 trees / mu, and the stand angle scale was 0.33 according to the standard angle of 90°.

[0036] Technical implementation: Choose sunny weather and control the stand angle scale to 0 according to the standard angle of 90° to carry out the stand angle scale ratio. The plant spacing is 2.0-2.5m. The length, width and height are 40cm×40cm×35cm, and the ridge is dug out. After the rain in March, 0.6kg of compound fertilizer with a total nutrient content of 45% was applied to the mixed soil, and 60 plants / mu of red cone, canopy wood, and oak leaf were planted at a ratio of 4:4:2, and the mixed tree species was seedling height Seedlings in containers of 1.3-1.5m.

[0037...

Embodiment 3

[0039] Implementation location: State-owned Huashan Forest Farm in Huanjiang County

[0040] Stand conditions before mixing: 18-year-old Chinese fir plantation pure forest stand, with an altitude of 456m. The original planting density was 2m×1.5m. After two times of manual thinning, the average DBH of the remaining trees was 21.7cm, the tree height was 18.4m, and the stand density was 74 trees / mu. The stand angle scale was 0.43 according to the standard angle of 72°.

[0041]Technical implementation: Select sunny weather and control the stand angle scale to 0 according to the standard angle of 72° to carry out the stand angle scale ratio. The plant spacing is 2.0-2.5m, and the ridge is dug according to the size of 40cm×40cm×35cm in length, width and height. After the rain in March, mix the soil and apply 0.5kg of compound fertilizer with a total nutrient content of 40%, and plant 45 plants / mu of Minnan and Huolinan at a ratio of 1:1, among which the seedling height of the mixe...

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Abstract

The invention discloses a method for mixed plantation of Chinese fir and broad-leaved trees at different ages. In the standing forest skylight plot of a pure Chinese fir forest, suitable broad-leavedtree species are selected according to different site conditions, 2-3 young broad-leaved tree species are subjected to mixed plantation according to a certain standing forest spatial structure, and the mixed plantation tree species can select castanopsis hystrix, erythrophloeum ferdii, sweetgum, quercus griffithii, michelia hedyosperma, manglietiastrum sinicum, michelia macclurei, phoebe bournei,etc. Practice shows that the method provided by the invention can effectively transform the pure Chinese fir forest into a mixed plantation forest, has high practicability, operability, and good application prospects, can effectively improve the ecological function of the existing pure Chinese fir forest, and has good economic benefits and landscape effects.

Description

technical field [0001] The invention belongs to the technical field of tree cultivation, and in particular relates to a method for interbreeding Chinese fir and broad-leaved trees of different ages. Background technique [0002] Chinese fir (Cunninghamia lanceolata) is one of the most important timber tree species in my country. It is widely distributed and has a long history of cultivation. The national fir forest area exceeds 1.0×10 7 hm 2 , accounting for about half of the plantation area in the south, and occupies an important position in my country's forestry construction. However, due to the long-term use of a single tree species pure forest management model, site decline and forest productivity decline; at the same time, large areas of pure Chinese fir forests are vulnerable to pests and forest fires, seriously restricting the sustainable development of forestry. Mixed forest is planting two or more tree species together in a certain proportion. Mixed forest can eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 韦铄星蒋燚张烨王勇刘雄盛刘菲黄荣林姜英李娟林建勇王家妍魏国余
Owner GUANGXI FORESTRY RES INST
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