立地条件对马尾松和湿地松生长和产脂量的影响

选择了高海拔和低海拔2种立地条件,研究了不同立地对马尾松和湿地松生长和产脂量的影响,结果表明:高海拔地区的湿地松胸径和树高均显著低于低海拔,高海拔地区湿地松平均胸径为7.65cm,平均树高为4.23m;低海拔湿地松平均胸径为10.69cm,平均树高为6.93cm。无论是高海拔地区还是低海拔区上,湿地松的单株日产脂量均显著大于马尾松,高海拔地区湿地松的单株日产脂量为1.33g,马尾松为0.41g,低海拔区湿地松的单株日产脂量为3.96g,马尾松为2.36g;在不同海拔高度上,两树种的产脂量均为低海拔区大于高海拔地区。

Effects of Site Conditions on Growth & Fat Yield of Pinus massoniana and Pinus elliottii

Two sites (high-altitude & low-altitude) were selected to study the effects of different sites on growth and yield of Pinus massoniana and Pinus elliottii.Result shows that DBH and tree height of Pinus elliottii in high altitude area were significantly lower than those in low altitude.The average DBH is 7.65 cm, the average height is 4.23 m, the average DBH of low altitude is 10.69 cm, and the average height is 6.93 cm.The daily fat yield per plant of Pinus elliottii is significantly higher than that of Pinus massoniana in high-altitude area and low altitude area, and the daily production capacity of Pinus elliottii is 1.33 g, 0.41 g of Pinus massoniana.The daily fat yield per plant is 3.96 g and 2.36 g.At different altitudes, the fat yield of two tree species are all low-altitude being higher than high-altitude.