摘要
研究了紫外辐射 ( UV- B)增强对圆叶和尖叶菠菜种子萌发及出苗的影响。结果表明 ,UV- B辐射增强将显著降低圆叶菠菜种子的出芽率和出苗率 ,延缓发芽进程、出苗速度 ,影响幼苗长势 ;而对尖叶菠菜的影响较小 ;增强 UV- B辐射还能有效抑制菠菜种子发芽时因病菌感染而发生的霉变 ,并减少幼苗期病虫害的蔓延和发展。
The influences of the intensified Ultraviolet radiation (UV\|B radiation, 280~400m on both the seed germination and its emergence for both the round\|leaf and the angular\|leaf spinach are studied in the present article.It is found that the enhanced UV\|B tends to decrease both the germination percentage and the emergence rate of round\|leaf spinach by retarding the progress of seed germination and the timetable of seedlings and hence to influence the growth of the seedlings.The influences of extra UV\|B radiation on the angular spinach seeds are not noticeable.The intensified UV\|B radiation seems to effectively prevent the seed germination from the mildew caused by the bacteria.The damage caused by the harmful insects is also decreased when the UV\|B radiation is intensified.
出处
《南京气象学院学报》
CSCD
北大核心
2001年第2期265-268,共4页
Journal of Nanjing Institute of Meteorology
基金
国家教育部骨干教师资助计划项目
