日本落叶松人工林不同造林密度试验研究∗

摘要

The reasonable planting density is one of the important means to gain the fast growth and high yield of plan-tation,to maximize the Larix kaempferi stands the largest production potential,the comparative tests of different planting densities of Larix kaempferi were conducted in Jianshi County National Gaoyanzi Forest Farm in March 2005,and the effect of different planting densities on the growth of Larix kaempferi including DBH,height,individual volume,stock-ing per unit area,preserving rate were analyzed and evaluated.The results showed that the planting space(3.0 m×2.0 m)was the best suitable density of Larix kaempferi plantation.%合理的造林密度是提高人工林生产力的重要手段,是获得人工林优质速生丰产的重要途径之一。为充分发挥日本落叶松林分最大的生产潜力,2005年3月,在建始县高岩子林场开展日本落叶松造林密度对比试验,分析造林密度对日本落叶松人工林生长的影响,包括对胸径、树高、单株材积、单位面积蓄积量、保存率等影响,结果表明：日本落叶松人工林的初植株行距以3 m×2 m 的单位面积收益最大。