金华市常见绿化苗圃主要杂草种类及发生特点

为有效防除绿化苗圃杂草,对金华市常见绿化苗圃主要杂草种类、分布及危害进行了调查,结果显示,金华市常见绿化苗圃杂草共有30科90种,其中主要杂草有水花生、香附子、牛筋草、马唐、狗尾草、一年蓬、狗牙根等,常见杂草有马兰、牛繁缕、婆婆纳、猪殃殃、车前草、荠菜、灰绿藜、小飞蓬、酢浆草、蓄、凹头苋等,偶见杂草有斑地锦、通泉草、泥胡菜、刺儿菜、龙葵、商陆、看麦娘等;大部分杂草在苗圃中呈随机分布,只有个别杂草呈聚集分布;不同季节,为害绿化苗圃的杂草种类、密度、出现频率等不同。

Main weeds species in gardening plant nursery in Jinhua City and its occurrence characteristics

In order to prevent and control the weeds in gardening plant nursery, distribution and damage of the main weeds species showing common in Jinhua City were investigated.The results showed that the weeds in the gardening plant nursery in Jinhua City belonged to 90 species,30 families.The main weeds include: Alternanthera philoxeroides Griseb,Cyperus rotundus L,Eleusine indica(L.)Gaertn,Digitaria sanguinalis(Liun.)Scop,Setaria viridis(L.)Beanv,Erigeron annuus Pers,Cynodon dactylon(L.)Pers.The common weeds include: Kalimeris indica Sch.-Bip,Malachium aquaticum Fries,Veronica didyma Tenore,Galium aparine L,Plantago asiatica L,Capsella burss-pastoris Medic,Chenopodium glaucum L,Conyza canadensis Crong,Oxalis corniculata,Polygonum aviculare L,Amaranthus lividus L.The rare weed include: Euphorbia supine Raf,Mazus japonicus Kuntze,Hemistepta lyrata Bunge,Hemistepta lyrata Bunge,Solanum nigrum L,Phytolacca acinosa Roxb,Alopecurus aequalis Sobol.Most of the weeds showed random distribution in the nursery,only a few weeds showed gathered distribution.The species,density and occurrence frequency of the weeds caused damage in the nursery were different in different seasons.