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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (18): 138-141.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

桉树枝瘿姬小蜂危害严重速生丰产桉树林分更新改造技术

梁一萍 方小玉 左跃珍 黄志勇 江 洁 马文志 董明亮 孔祥田   

  • 收稿日期:2010-04-19 修回日期:2010-06-17 出版日期:2011-09-20 发布日期:2011-09-20
  • 基金资助:
    广西壮族自治区财政资助桉树枝瘿姬小蜂防治专项资金

Technology of alteration of fast-growing and high-yield plantation of eucalyptus severely attacked by Leptocybe invasa Fisher & La Salle

  • Received:2010-04-19 Revised:2010-06-17 Online:2011-09-20 Published:2011-09-20

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摘要： 2008年11月至2010年1月对广西宁明县和龙州县共74.3 hm2受桉树枝瘿姬小蜂（Leptocybe invasa Fisher & La Salle）危害严重的巨园桉（Eucalyptus grandis × E. tereticornis）DH201-2林分进行更新改造，结果新林分不再受桉树枝瘿姬小蜂危害，定植9个月后2个地点林木平均生长量分别为树高4.0m和3.5m、胸径3.9cm和3.3cm，证明所采用的技术可行，即砍伐受害林木实现有效清除桉树枝瘿姬小蜂虫源、挖除伐根防止产生萌芽条为桉树枝瘿姬小蜂繁衍提供寄主、选择对桉树枝瘿姬小蜂高抗品种尾巨桉（Eucalyptus urophylla × E. grandis）DH32-29作更新造林树种、采用勾机挖坑、适时定植、及时抚育和施肥等科学营林措施促进林木快速生长等。试验发现受害林分更新改造还促进周边非易感桉树枝瘿姬小蜂但已受其影响的巨尾桉（Eucalyptus grandis × E. urophylla）GL9恢复生长，提出受害林分更新改造应作为我国当前防控桉树枝瘿姬小蜂的重要措施。

关键词: 水稻, 水稻, 免耕, 根系, 保护酶

Abstract: Experimental alteration of Eucalyptus grandis × E. tereticornis DH201-2 plantation totally 74.3 hm2 severely attacked by Leptocybe invasa Fisher & La Salle in Ningming and Longzhou of Guangxi was carried out from November 2008 to January 2010, results show that the replanted plantations are not attacked by Leptocybe invasa Fisher & La Salle, forests average height reach 4.0m and 3.5m, average diameter at breast height get to 3.9cm and 3.3cm respectively in two places 9 months after replanting, technologies utilized are proved to be effective, which are clearcutting of infected trees to kill the existing Leptocybe invasa Fisher & La Salle; digging up the stumps to stop supplying Leptocybe invasa Fisher & La Salle with host sprouting from the stumps; selection of replanted species of Eucalyptus urophylla × E. grandis DH32-29 with high resistance to Leptocybe invasa Fisher & La Salle; advanced silvicultural measures such as digging planting holes with digging machine, planting in favourable season, tending and fertilizing in time etc. to accelerate the forest growth. It also comes out that alteration of infected forest can recover the plantation of Eucalyptus grandis × E. urophylla GL9 nearby, which is not easily infectious to but affected by Leptocybe invasa Fisher & La Salle. Alteration of forest attacked by Leptocybe invasa Fisher & La Salle is pointed out to be an important measure for controlling Leptocybe invasa Fisher & La Salle in China currently.