摘要
本文报导稻田十种常见杂草对水稻产量的影响。经盆栽试验。当杂草密度10株/m^2时。水稻减产率:慈菇(55％)、泽泻(40％)、双穗雀稗(36％)、狼把草(30％)、萤蔺(30％)、四叶萍(20％)、空心莲子草(16％)、矮慈菇(7％);在杂草同种覆盖度下(100％)水稻减产率:牛毛毡(65％)、水绵(7％)。
The influence of several paddy weeds to rice yield was summarized. According to pot test, when the density of weeds was 10plunts/m2, the decrease rates in rice yield were in order of Sagittaria sagittifolia (50%), Alisma orient ale (40%) ,Paspalum distichum (36%),Scirpus juncoides (30%), Bidens tripartita (30%), Marsilea quadrifolia (20%), Alternanthera philoxeroides (16%),Sagittaria pygmaea (7%),Under the density of paddy weeds being 100%, the decrease rates in rice yield were Eleocharis yokoscensis (65%), Spirogyra sp. (7%).
出处
《贵州农业科学》
CAS
1993年第5期27-31,共5页
Guizhou Agricultural Sciences
关键词
水稻
杂草
泽泻
产量
为害
paddy field weeds
decrease rate in rice yield
yield
