| 摘要: |
| 调查了黄土高原退耕还林区草兔(Lepus capensis)对常见造林树种的危害程度与危害症状，并采取不同防治措施进行了防治效果试验。结果表明，草兔主要危害郁闭前的幼树，在调查的26种树木中，7种危害严重，10种危害中等，9种危害较轻。防治试验结果表明，春季用牛油或废柴油涂干处理的苗木被害率较对照降低50.2%或48.7%;造林时对裸根苗用多效抗旱驱鼠剂150倍水溶液兑成泥浆蘸根，苗木被害率降低32.3%;苗木生长期用多效抗旱驱鼠剂400～500倍水溶液叶面喷施、篱障阻隔、阻隔与药泥蘸根或阻隔与叶面喷施相结合，均对草兔危害有一定的防治作用，各处理苗木被害率分别较对照降低了25.5%，63.0%，80.2%和74.5%。其中以篱障阻隔与药剂泥浆蘸根造林技术相结合对草兔的预防效果最好。 |
| 关键词: 草兔危害 幼树；防治技术 多效抗旱驱鼠剂；篱障阻隔 |
| DOI： |
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| 基金项目:国家“十五”科技攻关项目(2001BA509B07-2-02)；国家林业局天然林保护工程重点科技推广项目(96-50);国家林业局重点项目(2002-20) |
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| Selective damage of rabbit to tree seedlings and its control techniques |
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| Abstract: |
| By means of investigation and experiment,the damage degree and symptom of rabbit to tree seedling in Loess Plateau were investigated,and its control by dipping roots in mud with RPA,spraying leaves with solution of RPA,obstructing with twig fence,and coating stem with beef tallow,used diesel oil and calcium oxide and so on were tested.The results showed that the damage of rabbit to the young tree mainly happened at the unclosed plantation site.Among the 26 tree species,there are 7 tree species with the highest damage degree by rabbit,10 tree species with the serious damage degree by rabbit and 9 tree species with the lightest damage degree by rabbit.Compared with the control,it can reduce the damage by 50.2% or 48.7% for coating stem with beef tallow or used of diesel oil,32.3%,25.5%,63.0%,80.2%,74.5% for dipping roots in muddy water with RPA solution of 150 times,spraying leaves of seedling with RPA solution of 400-450 times,obstruction with twig fence,and combining obstructing with twig fence with roots dipping or spraying with leaves,respectively.The best way for controlling rabbit damage is to combine obstruction with twig fence with roots dipping. |
| Key words: rabbit (Lepus capensis) damage planted forest control technic RPA obstructing with twig fence |
