摘要
对头炭疽病的初侵染源和田间发生规律进行了试验研究，其结果表明：头炭疽病的初侵染源主要是散落在田间的病残体和带病种茎，头２叶１心时就能发病。病害的消长与气象因子有密切的关系，一般温度１３～２５℃、相对湿度８０％以上的气候条件有利于发病；连作、地势低洼、长期积水等情况发病严重，砂质壤土和粘性稻土病情重于丘陵红壤土。
The study result showed that the initial inoculum source of scallion(Allium chinense G. Don)anthacnose was mainly from plant parts deserted in field and diseaded seed bulbs. When it grew up to three leaves, scallion began to suffer from anthracnose. The incidence of the disease was greatly related to climate. Generally,temperature 13～25℃ and relative humidity>80 % favoured the development of the disease,Continuous cropping and low-lying land with long-standing water would aggravate its development.the plants grown in sandy loam and rice soil suffered from the disease more severely than those grown in hilly red loam.
出处
《江西农业大学学报》
CAS
CSCD
1996年第3期355-359,共5页
Acta Agriculturae Universitatis Jiangxiensis
关键词
Jiao头
炭疽病
初侵染源
发生规律
scallion anthracnose
initial inoculum source
the rule of occurrence
