汕头沿海引种红树植物海桑的试验

STUDY ON INTRODUCTION OF MANGROVE SONNERATIA CARSEOLARIS ENGL. IN THE SEASHORE IN SHANTOU

汕头沿海引种海桑(SonneratiacarseolarisEngl.)试验4a的结果表明:该引种区分别比原产地及已引种成功的湛江、深圳的纬度高4°04′、2°22′和1°07′,同时建立了适用于引种区的造林、管护等一套成功的技术规程,共造林面积200hm2,成为目前我国引种该树种最北的林分。经观测,该林分生长发育正常,在适宜生境下,造林后1a平均树高生长可达1.80～2.70m,比本地树种提前6～7a实现防护作用;造林后2a开花结实,每年2次,能人工育苗。而且,其抗逆性、经济品质等生物、经济学特性与原产地基本相同。

It took 4 years for introduction and trial of mangrove Sonneratia carseolaris Engl. at the seashore in Shantou , Guangdong. The results showed that the area of introduction is about 4°04′N, 2°22′N and 1°07′N more northern than its origin and successful introduction in Zhanjiang or Shenzhen. At the same time, we have set up a whole set of introduction technical specification and protective processes. We accomplished introduction of 200 hm^2.So for, It has been the most northern one of this plant introduced in our country. The forests are growing normally. On the fit condition, its average height growth can reach 1.80m～2.70m after planted for one years. It will be 6 or 7 years earlier than the indigenous species for realizing protective function. After planted for two years, the Sonneratia carseolaris Engl. flowers and bears seeds twice every year and regenerates normally. The forests can be seedling nursery by artificial. Moreover, Both of its biological characteristic, such as resistance, and its economics quality will keep nearly as same as its origin's.