摘要
以大别山区安徽省舒城县河棚镇油茶林为试验地,对当地油茶炭疽病(病原Colletotrichum gloeosporioides)的发病情况与气候、林分及林地管理之间的关系进行了研究。结果表明,油茶炭疽病在温度20℃以上、降雨量大时发生严重;油茶与茶树的混交林病情指数最高,为21.0;油茶与板栗的混交林病情指数最低,为9.5;管理水平Ⅳ级(不做任何管理)的病情指数最高,为18.2;管理水平Ⅰ级(施肥、除杂、垦复松土、修除病枝和病虫害防治)的病情指数最低,为6.8;增施钾肥明显促进油茶果实的生长,果实炭疽病发病率比对照(不做任何处理)降低1/2左右;冬季整枝修剪可使果实发病率降低2/3左右。研究结果可为油茶炭疽病科学防治提供理论依据。
Oil camellia forests in Shucheng County were selected as experimental materials,the relationship between oil camellia anthracnose occurrence,climate,and management levels of oil camellia forests were investigated.The results showed that oil camellia anthracnose occurred severely when the temperature was above 20 ℃ with heavy rainfall.The disease index of oil camellia and tea forest was the highest with the value of 21.0.Oppositely,the disease index of the mixed forest between oil camellia and Chinese chestnut was the lowest with the value of 9.5.The highest and lowest disease index of management level were Ⅳ （no management） and Ⅰ （fertilization,edulcoration,tests of digging,prevention and control of pests）,the value was 18.2 and 6.8,respectively.Increasing potassium fertilizer and winter pruning significantly promoted the growth of oil camellia fruits by a half and reduced the incidence of anthracnose in fruits by two thirds.This study would provide basis for preventing oil camellia anthracnose.
出处
《湖北农业科学》
北大核心
2013年第24期6040-6043,共4页
Hubei Agricultural Sciences
基金
科技部农业科技成果转化项目富民强县专项(1104a0303065)
安徽省六安市科技攻关项目
