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Regulation and control method for promoting germination and renewal of abies regale seeds

A seed and fir technology, applied in the field of plants, can solve problems such as destruction, disturbance, and slow natural renewal rate

Pending Publication Date: 2021-05-04
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The natural regeneration of this tree species is mainly affected by factors such as the density of the mother tree, the volume of fallen trees, the coverage of shrubs, and the thickness of the moss layer, resulting in a slow natural regeneration rate.
Minjiang fir is considered to be one of the main tree species forming the timberline on the southeastern margin of the Qinghai-Tibet Plateau. It often exists in the form of pure forest in areas above 3000 m, and is the main construction species of forest communities in this area. slow update rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Miyaluo forest area at the end of the village, Quercus sichuanyunnanensis-Sigma sinica shrubs (Quercus sichuanyunnanensis accounted for 81%, Cotinus Cotinus coggygria var. glaucophylla , accounting for 5%), the plot was arranged on the southeast slope with an altitude of 3 300 m, and the slope was between 20° and 25°. The height of the shrub community is 3.1 m, the stand density is 4 117 clumps / ha, the canopy density of the shrub is 0.91, the coverage of the herb layer is 65.1%, and the coverage of the moss layer is 4.5%.

[0013] Sowing in the end village, in the three groups of small plots, the soil surface was not covered by litter, and it was planted under the Alpine oak shrubs in Sichuan and Yunnan, and 100 seeds were sown in each group.

[0014] In the first group, 4 seeds of the Minjiang fir seeds germinated. (The canopy density of this group of stands is 0.3)

[0015] In the second group, 0 seeds of the Minjiang fir seeds germinated. (The canopy density o...

Embodiment 2

[0018] In the end village of Miyaluo forest area, there is Quercus sichuanyunnanensis-Sigma chinensis shrubs (Quercus sichuanyunnanensis accounted for 81%, Cotinus sativa, accounting for 5%), the plot was arranged on the southeast slope at an altitude of 3 300 m, The slope is between 20~25°. The height of the shrub community is 3.1 m, the stand density is 4 117 clumps / ha, the canopy density of the shrub is 0.91, the coverage of the herb layer is 65.1%, and the coverage of the moss layer is 4.5%.

[0019] Sowing in Jumuzhai, in the three groups of small plots, the soil surface was not covered by litter, planted under the Alpine oak shrubs in Sichuan and Yunnan, and selected the gaps where the shrubs grew relatively less, and sowed 100 seeds in each group .

[0020] In the first group, 13 seeds of the Minjiang fir seeds germinated. (The canopy density of this group of stands is 0.8)

[0021] In the second group, 10 seeds of the Minjiang fir seeds germinated. (The canopy dens...

Embodiment 3

[0024] In the end village of Miyaluo forest area, there is Quercus sichuanyunnanensis-Sigma chinensis shrubs (Quercus sichuanyunnanensis accounted for 81%, Cotinus sativa, accounting for 5%), the plot was arranged on the southeast slope at an altitude of 3 300 m, The slope is between 20~25°. The height of the shrub community was 3.1 m, the stand density was 4 117 clumps / ha, the canopy density of the shrub was 0.91, the herbaceous layer coverage was 65.1%, the moss layer coverage was 4.5%, and the litter thickness was 4.0 cm.

[0025] Sowing in the end village, in three groups of small plots, the soil surface was covered with litter, planted under the shrubs of Quercus alpine in Sichuan and Yunnan, and 100 seeds were sown in each group.

[0026] In the first group, 27 seeds of the Minjiang fir seeds germinated. (The canopy density of this group of stands is 0.3)

[0027] In the second group, 0 seeds of the Minjiang fir seeds germinated. (The canopy density of this group of s...

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Abstract

The invention discloses a regulation and control method for promoting germination and renewal of abies regale seeds. The growth rate of the abies regale seeds is improved by arranging and controlling surface litters under different shrub canopy densities or densities, so that the germination of abies regale is promoted, the update of the forest stand structure of the quercus yunnanensis shrub is promoted by an artificial auxiliary seeding measure, the natural update succession period of the shrub is shortened, and the soil environment quality of a shrub forest land is further improved; the defects that natural updating is limited by natural conditions and the updating speed is low are overcome, and the evolution process of the existing quercus alpina shrub stand towards the top-level community-dark coniferous forest (Abies alpina forest) in the area. According to the regulation and control method for promoting the germination and renewal of the abies regale seeds, growth soil of the abies regale seeds is covered with earth surface litters, the abies regale seeds are planted in the Quercus aquifolioides shrub forest, the density is 2344-8258 clusters / hectare, and the canopy density of a community where the microenvironment of the growth soil is located is 0.3-0.5.

Description

technical field [0001] The invention relates to the field of plants, in particular to a regulation method for promoting the germination and renewal of Abies Minjiang River seeds. Background technique [0002] As an important ecological barrier in the upper reaches of the Yangtze River, the Miyaluo forest area in the high mountains of West Sichuan mainly includes shrubs, artificial forests, natural secondary forests and primitive dark coniferous forests. Quercus alpine shrubs in Sichuan and Yunnan belong to the main components of typical shrub vegetation in this region, and are greatly disturbed by human beings, and their natural regeneration is slow. It is particularly necessary to artificially assist regeneration of the shrubs to improve their ecological functions. To this end, the main local top species in this forest area—Minjiang Abies ( Abies faxoniana ) is of great significance to the seed germination status in the shrub. Minjiang fir, as the main reforestation tree ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 胡宗达刘兴良罗明霞李亚非胡璟朱万泽
Owner SICHUAN AGRI UNIV
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