摘要
来用与传统的五点取样法不同的倒置“Ｗ”９点采样法，对黑龙江省北部豆麦轮作区大豆田杂草发生危害情况进行了调查。结果表明，该地区大豆田杂草有１７科４１种。其中阔叶杂草１４科３５种，占８５．４％，禾本科４种占９．８％，鸭跖草科１种，木贼科１种，各占２．４％。相对多度达１０以上的杂草依次为，稗草、鸭跖草、问荆、铁苋菜、香薷、反枝苋，藜、卷茎蓼、苍耳等 ９种。其中前７种相对多度达２０以上，可视为当地大豆田的优势杂草。
Soybean field weed survey was conducted using an inverted W- Sampling frip pattern with 9 sampling points in the north region of Heilongjiang province. Of the 41 weed species recorded in soybean fields, 85. 4 % accounted for broadleaved weed and 9. 8 % for the grass family. Based on the analysis of their relative abundance, 9 species were important weeds in the area. Barn yard grass (Echinochloa crus-galli ) and day flower(Cwnmclina communis ) were the most abundant weeds.
出处
《大豆科学》
CAS
CSCD
北大核心
2000年第4期341-345,共5页
Soybean Science
基金
"九五"国家科技攻关项目!96-005-01-05-5
