浙北海堤湿地松防护林带的前期生长比较研究

通过对湿地松在不同立地条件下的前期生长观察研究认为:湿地松在海堤的生长量虽略低于平原水稻土,但也生长良好,在土壤含盐量为的老海堤上生(含苗龄)湿地松平均树高、胸径分别达 0.34 % 9 a 3 a到和;在土壤含盐量达到的新筑海堤上也生长良好,大苗移栽成活率达,栽后 5.64 m 9.4 cm 0.5 % 100 % 3 a(含苗龄生)平均树高、胸径,是适于海堤发展的防护林或绿化树种。为提高造林成活 6 a 3.86 m 5.2 cm率,在海堤造林宜采用大苗移栽。

Comparison Study on Early Growth of Pinus elliottii Forest Shelterbelt in Northern Costal Zhejiang

Observations on early growth of Pinus elliottii under different site conditions showed that increment in coastal bank was a little lower than in rice field, but it grew well. The average tree height and DBH of 9-year P. elliottii (including 3-year seedling period) reached respectively 5.64 m and 9.4 cm in old coastal bank with 0.34% saline content while that of 9-year plant(including 6-year seedling period) 3.86m and 5.2cm in newly built bank with 0.5% saline content.The survival rate of the latter seedling topped 100%. To increase survival rate of fore-station, it is better to transplant with big seedlings.