| 摘要: |
| 为了进一步提高对云杉落针病的防治效果，进行了不同云杉树种和营林抚育措施与云杉落针病的关系调查以及云杉落针病的化学防治试验。结果表明,以生态系统的自控能力和云杉落针病流行规律为依据，选用抗病树种紫果云杉造林、营造混交林、及时进行抚育间伐是防治云杉落针病的根本措施。使用75%百菌清、50%多菌灵和50%甲基托布津的1 000×液，65%代森锌、50%甲霜铜的500×液喷雾，对云杉落针病的林间防治效果均可达到90%以上；在山高坡陡、林木高大、交通和水源不便的地区，使用安林Ⅰ、安林Ⅱ杀菌烟剂，对云杉落针病的林间防治效果分别为81.9%和79.0%。各种药剂对病原菌孢子萌发的抑菌作用明显优于其对菌丝生长的抑制作用，因此，防治应在子囊孢子飞散高峰期进行。 |
| 关键词: 云杉 落针病 防治技术 |
| DOI： |
| 分类号: |
| 基金项目:甘肃省自然科学基金项目(C23) |
|
| Research on the control of Lophodermium plceae |
|
|
| Abstract: |
| Different species of spruce and their tending measures were investigated in relation to Lophodermium piceae and corresponding chemical control tests.Results showed that,based on the self-adjustment ability of ecosystem,selection of the disease-resistant species of P.purpurea,mixture pattern of forestation and timely tending were fundamental measures.The use of 75% of daconil solution,50% of badistan solution,1 000× solution of mildothane,65% of zineb solution,50% of metalaxyl solution or 500×liquid spray had favorable effect above 90%.Use of smoky killer of AnlinⅠor Anlin Ⅱ generated better result for controlling Lophodermium piceae,favorable effect reaching 81.9% and 79% respectively.The chemical treatments mentioned above were more significant to restrain spore from growth than to restrain mycelial,indicating that the control period should be during the spores spreading. |
| Key words: spruce Lophodermium piceae control techniques |
