摘 要：
繁缕(Stellaria media)在天津设施蔬菜地发生危害日趋严重,给萝卜、芹菜和番茄等蔬菜生产造成了严重威胁。为明确繁缕的发生规律,对天津市西青区辛口镇沙窝萝卜田繁缕发生情况进行了2年田间调查。结果表明:从9月中旬至萝卜收获前均有繁缕发生,11月中旬出苗达到高峰(20.83株/m~2),占整个生育期总出苗量(145.67株/m~2)的14.3%,随后出苗量逐渐减少。随着温度的降低,繁缕出苗量逐渐增加,最适生长温度为8～15℃。繁缕的发生量与萝卜产量性状呈极显著负相关(P<0.01)。
译 名：
Occurrence Dynamics of Stellaria media and Its Effect on Yield Characters of Radish in a Protected Field
作 者：
YU Jin-ping;LIU Yi-xue;LI Qi;ZHANG Wei;BAI Peng-hua;Tianjin Institute of Plant Protection;
关键词：
radish field;;Stellaria media;;occurrence dynamics;;yield;;character of yield
摘 要：
Stellaria media is becoming increasingly in the protected vegetable fields of Tianjin, posing a serious threat to the production of radish, celery, tomato and other vegetable crops. To determine the occurrence pattern of S. media, a two-year field investigation was conducted in a radish field in Xinkou Town, Xiqing District, Tianjin. S. media occurred from mid-September to harvest with an emergence peak in mid November(20.83 plant/m~2), accounting for 14.3% of its total seedling density(145.67 plant/m~2). Seedling emergence gradually decreased. S. media emergence increased as temperature decreased; the optimum germination temperature was 8 ℃ to 15 ℃. S. media density had a highly significant negative correlation with yield characters of radish(P<0.01).
