摘要
1991至1993年在不同生态区设点观察分析结果表明:不同类型品种、生态区及年际间病情差异显著;叶瘟于返青分蘖初期、分蘖末期至拔节期及抽穗期出现3次发病高峰;穗颈瘟流行程度与其发生期间的雨湿日数、平均相对湿度及适日平均气温高度相关,研究结果为稻瘟病发生程度区划及防治提供了依据.
This paper dealt wih the disease development and disease incidence of rice blast at 3 locations representing different ecological zones during 1991-1993. The result showed that the rice blast development was significantly different between rice varieties, ecological zones and years.Leaf blast had 3 disease peaks,i.e. turn green-early tillering stage,late tilling-jointing stage and heading stage. Correletion analysis showed that the disease index of neck blast was highly correlated to the total rainy day,fog days and dew days,as well as to the relative humidity and adapted mean temperature
出处
《西南农业学报》
CSCD
1995年第1期59-64,共6页
Southwest China Journal of Agricultural Sciences
关键词
稻瘟病
生态区
适日平温
相对湿度
水稻
Blast Ecological zones Adapted mean temperature Relative humidity
