摘要
试验结果表明:枸杞炭疽病的初侵染来源是树上和落地的病残果,越冬菌态是病组织内的菌丝体和病果上的分生孢子。枸杞炭疽病病原菌主要是以雨水传播,而气流只有在雨水将粘在一起的分生孢子溅击开后,才有较强的传播作用。试验说明,枸杞炭疽病病菌在15～35℃内孢子均可萌发,但适宜的萌发温度为23～30℃,相对湿度为75.6～100％,最适湿度为100％,在水滴中萌发最好。因此湿度、降雨早晚和多少,是影响该病菌田间消长的主要因素。根据其发病流行规律进行综合防治是对该病防治有效的技术对策。
Colletotrichum gloeosporioides Penz is initially caused by the diseasedfruits on trees and on ground the overwintering germs are myceliu withciothe cliseased ganizations and conidia on the diseased fruits.The originedgerms of colletotrichu gloeosporiodes penz are mainly infected through rainand sometimes through air only if rain drops strike conidia cohered togetherand make them seperated each other.Its showed that the conidia germinatedunder 15℃ to 35℃.optimum germatation temperature was 23℃ to 30℃.sui-table relative humidity for conidia germination was 75.6% to 100%.althoughthey germinate better at RH 100% or in water.temperature relative humidityrainning dates and amount of rainfall were main factors affecting the germsin fields.The final conclusion from the study is:comprehensive preventionand control is the most effective method incontrolling the disease.
关键词
枸杞
炭疽病
防治
发生规律
colletotrichum gloeosporioides Penz
epidemic law comprchensive prievention technique
