Chinese fir plantation structure reconstruction method

[0018] Example 1

[0019] The Chinese fir plantation was selected for background survey. The survey indicators included: canopy closure, tree age, tree height, diameter at breast height, geographic coordinates, altitude, slope, slope direction, soil type, and soil layer thickness. The results are shown in Table 1.

[0020] Table 1

[0021]

[0022] Randomly select sample plot 20*30m 2 , Cut down the competing trees, thin areas with high forest density, control the canopy closure to 0.6-0.7, and the retained density of fir trees·hm -2 , Planting Huangshan Luan, Chinese Toon, Sawtooth Oak, Liquidambar, Sopin and Sassafras evenly under the forest, the planting density of each tree species is 300 trees·hm -2 , Dig holes 40*40*30cm when planting 3 .

[0023] Example 2

[0024] Using the technical scheme of Example 1, the difference is: after thinning the sample plot, the canopy closure is below 0.5, and the retention density of fir is 1200 plants·hm -2 , Plant Schima superba, Duying and Taxus chinensis evenly under the forest, and the planting density of each tree species is 800 trees·hm -2 .

[0025] Example 3

[0026] Using the technical solution of Example 1, the difference lies in: uniformly planting Huangshan Goldenrod, Toona sinensis, Sawtooth Oak, Liquidambar formosana, Sapindus sassafras, Camptotheca acuminata, Sassafras tallow, among which Liquidambar formosana, Sopin, Sassafras, Camptotheca planting density is 200 plants·hm -2 , The remaining tree species are 250 plants·hm -2 .

[0027] In the above embodiments, compound fertilizer base fertilizer 0.5 kg / hole or organic fertilizer 1-2 kg / plant can also be applied during tree planting.