台风"达维"为害海南腰果生产情况调查

2005年9月台风“达维”袭击海南省,是1973～1979年海南大面积种植腰果以来受到的最严重的自然灾害。台风灾害后调查表明,缺乏防护林带的成龄和幼龄腰果园,在10级以上台风和暴雨袭击下,腰果树严重倒伏、枝杆折断,叶片受损。12级以上台风和特大暴雨的袭击,腰果树受到的灾害则是毁灭性的。不合理的宽行密株(4m×14m)的腰果园抗风力最差,幼龄腰果树因根浅枝嫩,抗风力低于成龄树。为尽快恢复腰果植区灾后生产,提出了台风灾害后果园的抚管措施和防风减灾建议。

A Survey of Typhoon Dawei's Damage to Cashew Production in Hainan

Typhoon Dawei struck Hainan province in September, 2005, resulting in the heaviest natural disaster that ever attacked this province since cashew was planted in large area during 1973 to 1979. A survey of the calamity shows that when mature and young cashew garden without shelter bolt was attacked by a grade 10 and above typhoon and rainstorm, a great number of cashew trees fell, their branches got broken, and their leaves were destroyed, and when typhoon was escalated to grade 12, a fatal disaster would occur to cashew plantation. Cashew garden with unscientific line width (4m*14m) is the least wind-resistant and young cashew tree is also characterized by weak wind-resistant because of shallow roots and tender branches. To resume production of cashew damaged by typhoon Dawei, this paper introduces management measures and suggestions on avoiding wind and alleviating damages of typhoon to cashew garden.