摘要
对拉萨１９８８～１９９０ 年油菜白锈病和同期的气象要素进行了相关分析。６～７ 月平均气温高，夜间温度大，日较差小，阴雨寡照和空气湿度大，有利于白锈病的发生发展；提高地表温度，可减轻白锈病的发生发展。
The correlation between rape white rust and meteorological factors in Lhasa from 1988 to 1990 were analyzed. The main results are as follows:The conditions favorable to the occurrence and development of rape white rust are higher mean temperature higher night mean temperature, less diurnal range of temperature, more rainy days and less radiation, higher relative humidity. Raise the ground temeprature can reduce the occurrence and development of rape white rust.
出处
《中国农业气象》
CSCD
1999年第4期38-41,共4页
Chinese Journal of Agrometeorology
关键词
油菜
白锈病
气象因子
农业
气象条件
Rape
White rust
Meteorological factors
Lhasated morulae and blastocysts were collected and bisected microsurgically by using special knife, obtained half embryos were cultured and observed. Results Take rate of bisection for morurae is 91
