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通过多年的试验表明 ,红松不同的造林密度 ,造林投入成本不同。造林密度大不仅造林成本高 ,而且初次透光抚育时间提前 ,经济效益低。造林后 2 0a ,每公顷 4 4 44株与每公顷 3330株的造林密度林分相比 ,胸径、树高、蓄积生长量差异不显著。一般红松造林以每公顷 3330株的密度为宜 ,在立地条件好、交通便利的地块 ,适宜每公顷 2 50 0株的造林密度 ,并进行林粮间作
Through years of experiments show that the different afforestation density pine, afforestation input costs are different. Afforestation density is not only high cost of afforestation, but also for the first time early tearing, low economic benefits. There was no significant difference in DBH, tree height and accumulated growth between 4 4 44 plants per hectare and plantation density of 3330 plants per hectare after 20 years of afforestation. Generally, the density of 3,330 plants per hectare is suitable for Korean pine plantation. The planting density of 2,500 plants per hectare is suitable for plots with good site conditions and convenient transportation, and intercropping with forest and grain