油茶根腐病发生规律和综合防治研究

油茶根腐病是油茶林的新病害，植株自发病至死亡为２～３年，其病菌为根际土壤习居菌，喜酸性和较低温度，病菌侵入植株的途径主要是伤口，潜育期２０ｄ左右．防治本病的关键是保护幼树根颈部及主根不受伤害，加强管理，增强树势．此外，用熟石灰在根际处与表土层拌匀覆盖和用多菌灵、退菌特等杀菌剂及时进行防治，并辅以营林技术措施治理，可收到良好的防治效果．

Study on the Infection Cycle and the Integrated Control of Root Rot of Camellia oleifera

Root Rot of Camellia oleifera is a kind of new disease.The period of the infected trees frombeig infected to death lasts 2-3 years.The pathoginical fungi are soil invader in root-sphere andadapt act.d soil and loWer temperature.The mode of infection is wound infection,the dormant period is 20 days or more.The key measures f6r controlling this disease are to protect the root stemtransition zone and the main roots from the injure,and to strengthen the management,and toenhance the tree,s potential.In addition.by covering the root-sphere with the mixture of thesupper layer soil and slaked lime,and spreadding the fungicide-Carbendazin or Tuzet,and assisting with the measure of silvicultural control,a better.control effect can be obtained.