论文部分内容阅读
一、本文是1972~1979年调查研究苹果赤衣病的总结。二、赤衣病的病原菌是鲑色伏革菌Corticium salmonicola,它的担孢子及分生孢子大小各分别为8.6~15.8×6.3~11.2微米及10.5~38.5×7.7~1.4微米。分生孢子萌发适温为25~30℃,萌发时要求高湿,以在水滴中最好。分生孢子的寿命在日平均温度17℃左右的干燥条件最长可存活20天。菌丝生长最适温度为23~27℃。三、病菌的分生孢子随雨水传播,主要由伤口浸入。病菌以休眠菌丝及白色菌丛越冬。病害在雅安从3月开始发生,5~6月为盛发期。四、病害的发生主要与雨量及温度有关。此外与土壤质地、含水量及品种、以及树龄也有一定关系。五、采用石灰水刷干及喷射退菌特保护树体可取得良好防治效果。
First, this article is from 1972 to 1979, a survey of apple red clothes disease summary. Second, the pathogen of red disease is Corticium salmonicola, its basidiospores and conidia sizes are 8.6 ~ 15.8 × 6.3 ~ 11.2μm and 10.5 ~ 38.5 × 7.7 ~ 1.4μm respectively. Conidial germination suitable temperature 25 ~ 30 ℃, germination requires high humidity, in the best water droplets. The life of conidia in the average daily temperature of about 17 ℃ drying conditions can survive up to 20 days. The optimum temperature for mycelium growth is 23 ~ 27 ℃. Third, the bacteria conidia spread with the rain, mainly by the wound immersion. Pathogens to dormant mycelium and white flora winter. Diseases in Ya’an began in March, 5 to June for the Shengfa period. Fourth, the occurrence of diseases mainly related to rainfall and temperature. In addition with the soil texture, water content and variety, as well as age have a certain relationship. Fifth, the use of lime water jet brushing and dehumidification special protection tree can get good control effect.