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Method for regeneration under forest canopy of standing forest of Pinus elliottii Engelm

A technology for wetlands and pine forests, applied in the field of forest stand regeneration, can solve problems such as the lack of wetland pine forests, restrict production and popularization, and achieve the effects of large transformation potential, easy-to-understand technology and strong operability.

Active Publication Date: 2020-09-29
HUNAN ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, there are problems in the existing technology: the selection and configuration of tree species for understory regeneration of slash pine forests, the selection of forest thinning intensity and thinning time, etc., all limit the production and popularization and application of understory regeneration of slash pine forests. Report on Understory Regeneration of Slash Pine Stands

Method used

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  • Method for regeneration under forest canopy of standing forest of Pinus elliottii Engelm

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Embodiment 1

[0028] A kind of method for regeneration under sub-forest of slash pine forest of the present invention, flow process is as follows figure 1 shown.

[0029] (1) Implementation location: Liuyang Lake Forest Farm, Liuyang City

[0030] (2) Implementation time: January 2014-September 2019

Embodiment approach

[0032] ①Stand selection: select a small class located in the Lianyunshan branch of the Liuyang Lake State-owned Forest Farm in Liuyang City, with an altitude of 200-300m in the pure slash pine forest, with a stand canopy density of 0.8, a stand age of 22 years, and a stand density of 100 Plant / mu, the average thickness of forest land soil layer is 60cm.

[0033] ②Stand thinning: Thin out the trees with unstraight trunks and crushed trees. The thinning intensity is 25% of the total number of trees. After thinning, the canopy density is kept at about 0.6, and 70-75 trees / mu are reserved.

[0034] ③Forest land cleaning: Clean up in small pieces, remove weeds and weeds within 1 square meter around the edge of the hole, and cut off vines and shrubs that are entangled and affect the growth of trees.

[0035] ④ Soil preparation and planting: Dig holes in late January 2014. Dig size: 60×60×50cm; before planting, apply 250g of compound fertilizer to each hole as base fertilizer, remove...

Embodiment 2

[0039] A kind of method for regeneration under sub-forest of slash pine forest of the present invention, flow process is as follows figure 1 shown.

[0040] (1) Implementation location: Longbo State-owned Forest Farm in Shuangpai County

[0041] (2) Implementation time: March 2015-September 2019

[0042] (3) Implementation plan:

[0043] ①Stand selection: Select a small class located in the garden area of ​​the Longbo State-owned Forest Farm in Shuangpai County. The average altitude is 400m. The forest canopy density is 0.7. The forest age is 15 years. The layer thickness averaged 50 cm.

[0044] ②Stand thinning: Thin out the trees with unstraight trunks and crushed trees. The thinning intensity is 30% of the total number of trees. After thinning, the canopy density is kept at about 0.6, and 75-80 trees / mu are reserved.

[0045] ③Forest land cleaning: Clean up in small pieces, weeds and weeds within 1 square meter around the edge of the hole, and cut off vines and shrubs t...

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Abstract

The invention discloses a method for regeneration under forest canopy of standing forest of Pinus elliottii Engelm. The method comprises the following steps: firstly, carrying out intermediate fellingon the standing forest of Pinus elliottii Engelm with the standing forest canopy density of 0.7 or above, carrying out forest land cleaning and land preparation, and then, selecting schima superba, taxus mairei and phoebe bournei as regeneration tree species, wherein the schima superba is planted in the upper middle portion of the forest land, the phoebe bournei and the taxus mairei are planted in the middle lower portion of the forest land, the regeneration tree species are cultivated once in October and November in the same year of afforestation, the regeneration tree species are hoed and subjected to stump cultivation once in September and October in the second year of afforestation, and the regeneration tree species are hoed once in the third year of afforestation. According to the method disclosed by the invention, key measures such as regeneration tree species selection, tree species configuration, intermediate felling of the standing forest and cultivation management are provided, the blank of selection and operation management of regeneration under forest canopy of the standing forest of Pinus elliottii Engelm is filled, and technical support is provided for regeneration of the standing forest of Pinus elliottii Engelm; and the method is popular and easy to understand in technology and high in operability, has a relatively large technical achievement transformation potential and is wide in application prospect.

Description

technical field [0001] The invention belongs to the field of stand regeneration, and in particular relates to a method for understory regeneration of slash pine stands. Background technique [0002] Slash pine (Pinus elliottii Engelm) is a fast-growing evergreen tree belonging to the genus Pinaceae. Nearly 100 million mu, often used as fast-growing afforestation tree species, this tree species has good ecological and economic benefits. At present, the research on slash pine mainly focuses on seedling raising, afforestation technology and breeding of improved varieties. In recent years, pine wood wilt disease caused by pine xylophilus is called cancer of pine trees and is a devastating disease. Since its discovery in 1982, it has spread rapidly, posing a devastating threat to millions of hectares of pine forests in southern China. In addition, large areas of slash pine pure forests are easily harmed by pine caterpillars, and the ecological stability is poor. With the impr...

Claims

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Application Information

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IPC IPC(8): A01G23/00A01G17/00A01G13/00A01C21/00
CPCA01G23/00A01G17/005A01G13/00A01C21/005Y02A40/22Y02P60/40
Inventor 刘振华童方平李贵陈瑞吴敏
Owner HUNAN ACAD OF FORESTRY
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