设施萝卜田繁缕发生动态及对萝卜产量性状的影响  

Occurrence Dynamics of Stellaria media and Its Effect on Yield Characters of Radish in a Protected Field

作　　者：于金萍[1] 刘亦学[1] 李琦 张惟[1] 白鹏华[1] YU Jin-ping;LIU Yi-xue;LI Qi;ZHANG Wei;BAI Peng-hua(Tianjin Institute of Plant Protection,Tianjin 300381,China)

机构地区：[1]天津市植物保护研究所

出　　处：《杂草学报》2019年第2期16-20,共5页Journal of Weed Science

基　　金：天津市植物保护研究所所长基金(编号:20170002S)

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)。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).

关 键 词：萝卜田 繁缕 发生动态 产量性状 

分 类 号：S451.24+1[农业科学—植物保护]