我县木麻黄海岸防护林带,自1973年发生青枯病以来,大量林木感病死亡,如今疫病继续流行,给全面更新恢复林带带来了很大的困难,如港口大队1974年在疫区更新造林三百多亩,1976年开始林木逐渐感病死亡,到1978年底平均死亡率在60%以上,局部地方达90%以上。所以开展抗病 My county Casuarina coast shelterbelt, since the occurrence of bacterial wilt in 1973, a large number of forest disease deaths, and now the epidemic continues to prevail, to fully update the restoration of forest brought great difficulties, such as the port brigade in the affected area in 1974 to update Planting more than 300 mu, beginning in 1976, the disease gradually died of forest disease, by the end of 1978 the average mortality rate in more than 60%, some places more than 90%. So carry out disease resistance