摘要
采用黄皿诱蚜、分期播种、网罩栽培及药剂治蚜等方法,研究了萝卜在南京夏秋栽培中病毒病的发生发展和有翅蚜、无翅蚜的关系。试验结果表明:有翅蚜迁入量和萝卜病毒病的发病强度呈极显著正相关,有翅蚜的发生量和发生期可以作为萝卜病毒病田间流行的预测依据;适期早播可以大大减轻病毒病的发生;萝卜苗龄越小抗性越弱;药剂治蚜可以显著减轻产量的损失,并减轻病情指数,但不能降低发病率;萝卜品种间抗病性差异不是由于抗蚜性差异所致。
By collecting alate aphids with yellow-pan water traps, sowing radish at different dates, practising cage cultivation method and chemical controlling, the relationship between the virus disease development of Chinese radish and the growth and decline of aphids was studied in Nanjing in summer—autumn, 1987. The results showed that 1) there was a significant positive correlation between the number of collected alate aphids and the disease incidence or index; 2) earlier planting could obviously alleviate the disease damage; 3) the younger the seedlings, the weaker the disease resistance; 4) the chemical control of aphids usually could not significantly decrease the disease incidence, but could obviously reduce the disease index and loss of the biological and economical productions of Chinses radish; 5) the differences in disease resistance among the tested radish varieties were not caused by the resistance to aphids.
出处
《上海农业学报》
CSCD
1991年第3期75-79,共5页
Acta Agriculturae Shanghai
关键词
萝卜
病毒病
蚜虫消长
药剂防治
Radish virus disease, Growth and decline of aphids, Chemical control, Sowing date, Production
