乐山嘉州绿心公园巨桉感染焦枯病的调查

Investigation on the Epidemic of Eucalyptus Dieback in Lvxin Park of Leshan City

桉树焦枯病(Eucalyptus dieback)是一种由真菌引起的威胁桉树健康的重要病害,影响植株生长,可带来严重的经济损失。文章针对乐山市绿心公园巨桉焦枯病感染情况进行普查,走访巨桉林35处,叶部病害危害程度为轻度的有17处,占48.57%;中度17处,占48.57%;重度1处,占2.86%。枝梢病害危害程度为轻度的有30处,占85.71%;中度5处,占14.29%。树干为轻度危害的有34处,占97.14%;中度1处,占2.86%。调查表明乐山市绿心公园巨桉焦枯病感染较为严重的是绿心路小环线。

Eucalyptus dieback, caused by fungi, is a severe disease that threatens the development of eucalyptus. It affects plant growth and can cause serious economic loss. In this article, the survey was con- ducted on the infection status of 35 eucalyptuses groves in Lvxin Park. It turned out that for the infection condition of foliage disease, 17 groves were lightly stricken, accounting for 48.57% and the moderately stricken groves shared the same proportion; 1 grove was seriously stricken, a proportion of 2.86%.For the infection status of branch-tip disease, 30 groves were lightly stricken, reaching 85.71%; 5 groves were moderately stricken, with a proportion of 14.29%. 34 groves were lightly stricken in trunks, a percentage of 97.14%; only 1 grove was severely stricken, a proportion of 2.86%. The survey results indicated that the Lvxin Ring Road area was comparatively seriously stricken by dieback in Lvxin Park.