吉林省中部地区玉米田杂草种类及其优势种群调查报告

掌握不同生态条件下的玉米田杂草发生种类及优势种群情况,对于制定杂草综合治理方案,科学选用化学除草剂及其配套技术具有十分重要的指导意义.本文选用倒"W"型9点取样法,对吉林省主要玉米产区的玉米田杂草发生情况进行了普查.结果表明,我省中部地区玉米田杂草种类有16个科,35种.相对多度较大的有稗草、苣荬菜等十余种。

Investigation Report About the Weed Species and Dominant Population in the Corn Field in the Central Area of Jilin Province

Understanding the weed species and dominant population situation in the corn field under different ecological environment condition has important significance to draw up a comprehensive treatment scheme to control weed and using herbicides and it's supporting measures.Weed survey in corn field was conducted using an inverted W pattern with 9 sampling points in corn producing area of Jilin province,there appeared 35 species,belonging to 16 families,among which barnyard grass(Echinochlia crusgalli),perennial sow-thistle(Ixeris denficulata) are dominate in the field.