福建省沿海木麻黄衰枯原因的研究

Study on the Withered Reasons of Coastal Casuarina in Fujian Province

调查研究表明：福建省木麻黄衰枯现象是由多种因素引起的一种林木衰退病，其诱发因素主要是树种、种源的不适应，土壤肥力下降、水分失调：激化因素主要是星天牛、木毒蛾等虫害及风沙害；促进因素是引起木质部变色的次生病原菌。

The investigation indicates that the withered phenomenon of coastal Casuarina in Fujian Province is a forest tree decline disease caused by manifold factors.Its predisposing factors are mainly the unsuitable species and provenances,reductive soil fertility and abnormal water.Its incitant factors are the insect damage of Anoplophora chinensis,Lymantria xylina ,etc.,wind damage and sand damage.Its contributing factor is the secondary pathogens which raise the xylem discoloration.