【摘要】 阐述了杜松赤枯病病原菌的研究结果 ,研究表明交链孢 (Alternariasp )和茎点霉 (Phomasp )是杜松赤枯病的主要致病真菌 ;两种病原菌均喜偏酸性的条件 ,菌丝生长发育的适宜pH值是 5～ 7;菌丝生长的适宜温度是 2 0～ 30℃ ,孢子萌发的适宜温度是 15～ 2 5℃ ,2 0℃时萌发率最高 ;Al ternariasp 在相对湿度 90 %以上能较好萌发 ,Phomasp 在湿度 10 0 %时才能萌发 ,在水滴中萌发率最高 ;两种病原菌对云杉和丹东桧的嫩枝叶也有较强的致病性更多还原

【Abstract】 The study indicated, alternaria sp and phoma sp are the main pathomycete causing the diseace of Chinese Juniper; the two pathogenic bacteria are all fund of the meta aid condition The suitable pH valiue for growth and devepopment of hypha is 5～7;the suitable temperature for hapha is 20～30℃; the suitable temperature for spore germination is 15～25℃,at 20℃ the germuinal rate is higher Germination of Alternaria sp is better at 90% of relative humidity, but for phoma sp , until 100%, and the highest germinal rate is in water The two parhogenic bacterias also have stronger pathogenicity for shoot and leaf of spruce and Chinese juniper更多还原