论文部分内容阅读
通过盆栽试验 ,研究了真菌自身生物学特性、杂草生长状况和环境因素等对胶孢炭疽菌婆婆纳专化型菌株QZ 97a侵染波斯婆婆纳的影响 .结果表明 ,子叶期和衰老期的波斯婆婆纳感病性最强 ;培养 7～1 4d后的孢子侵染力最强 ;病害发生的最佳温度范围是 1 5～ 2 5℃ ;在保湿 2～ 3d的条件下 ,露期中间的光照时间越短 ,病害发生越严重 ;保湿也可通过添加玉米粉和黄豆粉等介质来解决 ;达到理想致病效果的该菌株孢子悬浮液浓度必须在 1 0 7个·ml-1 以上 .由此可见 ,菌株QZ 97a在波斯婆婆纳发生时期的环境条件下可有效控制该杂草
The pot experiment was conducted to study the effects of self-biological characteristics of fungi, the growth of weeds and environmental factors on the infection of Persian Verna in QZ 97a, an isolating strain of Colletotrichum gloeosporioides. The results showed that in cotyledon stage and senescence stage Persian Verona was the most susceptible; the spore infestation was the strongest after 7 ~ 14d incubation; the optimal temperature range of disease occurrence was 15 ~ 25 ℃; in the condition of 2 ~ 3d moisturizing, Of the light time is shorter, the more serious disease occurs; moisturizing can also be added by adding corn flour and soy flour and other media to solve; to achieve the desired pathogenic effect of the strain spore suspension concentration must be more than 107 · ml-1. Thus, the strain QZ97a can effectively control the weeds under the environmental conditions of the persian-pinga period