栽培密度对油松人工林生长的影响

Effect of Cultivation Density on the Growth of Pinus tabulaeformis Plantation

以油松人工林为试验对象,研究了4种密度下油松人工林生长情况、土壤物理结构和养分变化,揭示了不同栽培密度对油松人工林生长的影响。结果表明:栽培密度对油松人工林株高、胸径、冠幅、单株积材、林分蓄积、土壤物理结构和养分含量均存在显著影响。综合考虑各指标,建议在甘肃子午岭地区采用2800株/hm^(2)的栽培密度。

The growth,soil physical structure and nutrient changes of Pinus tabulaeformis plantation under 4 different densities were studied,and the effects of different densities on the growth of Pinus tabulaeformis plantation were revealed.The results showed that cultivation density had significant effects on plant height,DBH,crown width,individual tree accumulation,stand accumulation,soil physical structure and nutrient content of Pinus tabulaeus plantation.Taking all the indexes into consideration,it is suggested to adopt the cultivation density of 2800 plants/hm^(2) in Ziwuling area of Gansu Province.