摘要
为弄清常德市不同类型稻田杂草种类分布及发生状况,根据不同地势条件及播栽类型,采取5点取样法,对常德市不同稻田杂草的种类、分布及危害状况进行了调查。结果表明:常德市水稻田杂草种类有147种,48科,其中,禾本科占14.97%,菊科、莎草科和蓼科各占6.80%,玄参科占6.12%,唇形科占4.08%,豆科、大戟科和蔷薇科各占3.40%。分布较多的有35种,占23.81%;分布量中等的有45种,占30.61%;分布量较少的有67种,占45.58%。危害最严重的杂草种类依次为稗、千金子、鸭舌草、荆三棱、空心莲子草和水蓼。
The species,distribution and harm of weeds in different types of paddy fields in Changde city were investigated to explore the distribution and occurrence of weeds in different paddy fields in Changde City.The results showed that there were 147 weed species of 48 families which including Gramineae（accounted for 14.97%）,Compositae,Cyperaceae and Polygonaceae（accounted for 6.80% respectively）,Scrophulariaceae（accounted for 6.12%）,Leguminosae,Euphorbiaceaec and Rosaceae（accounted for 3.40% respectively）in the fields.There were 35 kinds of widely distributed weeds（accounted for 23.81%）,45 kinds of middlingly distributed weeds（accounted for 30.61%） and 67 kinds of less distributed weeds（accounted for 45.58%）.The order of the weed harm level,from high to low,were Echinochloa crusgalli,Lepochloa chinensis,Monochoria vaginalis,Cyperus iria,Alternanthera philoxeroides and Polygonum hydropiper.
出处
《贵州农业科学》
CAS
北大核心
2012年第11期133-138,共6页
Guizhou Agricultural Sciences
基金
2009年湖南省科技攻关项目"洞庭湖湿地野生动植物多样性保护与利用的研究"(09ck3021)
湖南省"十二五"重点学科项目"作物遗传育种学"[湘教通(2011)76]
