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樟子松1年生苗采用20×20cm、20×10cm、20×75cm、20×50cm、20×40cm、20×33cm6种移植密度试验结果表明,苗木高生长差异不明显,地径差异达到了1%的显著水平。苗木径高比、单株生物量随着移植密度的减小而增大。一级苗百分率随密度的增大而减小,经济效益随密度的增大而上升,最大密度与最小密度的单位产值相差4倍以上。从综合质量指标和经济效益两方面考虑,以20×40cm和20×50cm两种移植密度最佳。
Pinus sylvestris 1 year seedlings with 20 × 20cm, 20 × 10cm, 20 × 75cm, 20 × 5 0cm, 20 × 4 0cm, 20 × 3 3cm6 kinds of transplant density test results show that the difference in seedling height growth is not Obviously, the difference in diameter reached a significant level of 1%. Seedling height-to-diameter ratio and plant biomass increased with the decrease of transplant density. The percentage of primary seedlings decreased with the increase of density, the economic benefit increased with the increase of density, and the difference between the maximum density and the minimum density was more than 4 times. Considering both comprehensive quality index and economic benefit, the two transplant densities of 20 × 40cm and 20 × 50cm are the best.