论文部分内容阅读
桉树枝瘿姬小蜂已成为危害赣南桉树枝叶的主要害虫,已进入爆发阶段,严重威胁着赣南桉树产业的发展,选育优良的桉树抗性品种(系)是防治该蜂的最有效方法之一。以目前江西赣南推广面积较大的7个桉树品种(系)为试材,采用野外调查和室内幼苗接虫抗性鉴定等方法,选取样枝平均虫瘿数、有虫瘿株率、丛枝率等指标进行综合评价,研究这些品种(系)对桉树枝瘿姖小蜂的抗性。结果表明:不同桉树品种(系)对桉树枝瘿姬小蜂的抗性不同,7个桉树品种(系)对桉树枝瘿姬小蜂的抗性从高到低顺序为:柠檬桉>巨尾桉GL9>赤桉>大叶桉≥巨桉>窿缘桉>巨园桉DH201-2,其中柠檬桉为高抗虫品种,林间调查未发现有虫瘿,巨尾桉GL9属中抗品系,受害较轻,而巨园桉DH201-2为高感虫品系,受害严重。
Eucalyptus Bugshoots have become the major pests that endanger the branches and leaves of Eucalyptus in southern Jiangxi Province, and have entered the outbreak stage, which seriously threatens the development of the Eucalyptus industry in Southern Jiangxi Province. Eucalyptus resistant varieties (lines) are the most effective One of the ways. Based on the field investigation and the identification of the resistance to inoculation with indoor young seedlings, seven eucalyptus varieties (lines) with larger popularization area in Jiangxi province were selected as the test materials. The average number of insects, Branch rate and other indicators of a comprehensive evaluation of these varieties (lines) on Eucalyptus small branches beetle resistance. The results showed that the resistances of different eucalyptus varieties to Eucalyptus were different, and the order of resistance of seven eucalyptus varieties to Eucalyptus wasps was: lemon eucalyptus> giant tail Eucalyptus GL9> Eucalyptus grandis> Eucalyptus urophylla> Eucalyptus grandis> Eucalyptus grandis> Giant garden Eucalyptus DH201-2, among which Eucalyptus citrifolia was a high insect-resistant variety, , Less damage, while the giant garden Eucalyptus DH201-2 is highly susceptible strain, seriously affected.