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一、胶园防护林树种选择和引种目的桉类、木麻黄、台湾相思、油茶是胶园防护林中使用最早最普遍的树种。这些树种在我国橡胶生产中起了很大作用,而且将继续广泛使用。但是上述树种营造的防护林带,树种单纯,结构简单,防风效果差,经济价值较低。桉树早期(3～4龄)时,在9级以上台风袭击下,易断倒;木麻黄木材的天然耐久性较差,极易腐朽和虫蛀,且易开裂变形。木麻黄在湛江垦区生长不良,有衰退现象。另外,星天牛危害严重;台湾相思多干弯曲,又是红根病的寄主,易传染给橡胶。加之历年台风对防护林的危害和人为的乱砍滥伐,使防护林带残缺不全,防护效能大大降低,
First, the choice of rubber garden shelterbelt species and the introduction of the purpose of introduction Eucalyptus, Casuarina, Taiwan Acacia, Camellia rubber shelter is the earliest and most commonly used species. These species play a large role in our rubber production and will continue to be widely used. However, the shelter belt created by the above-mentioned tree species has simple tree species, simple structure, poor windbreak effect and low economic value. Eucalyptus early (3 to 4 years), more than 9 typhoons hit easily broken down; natural wood Casuarina poor durability, easy to decay and moth-eaten, and easy to crack. Casuarina Zhanjiang reclamation area poor growth, a recession. In addition, the star-cows seriously endangered; Taiwan Acacia more dry, but also the host of red root disease, easily transmitted to the rubber. Coupled with the typhoon over the years the dangers of shelterbelt and artificial deforestation, the shelterbelts incomplete, greatly reduced the effectiveness of protection,