冬季亚麻杂草种类危害及防除研究

本文调查研究了州内亚麻种植地区的田块杂草种类、分布和发生规律。查清杂草共有101种，隶属25科，发生危害重的有7科26种，占25．74％；双子叶杂草77种，占76．23％，单子叶杂草22种，占21．78％，蕨类杂草2种，占1．98％。一年生杂草42种，占42．58％，越年或一年生杂草29种，占28．7l％，多年生杂草30种，占29．7l％。杂草随亚麻的播种而生长，至枞形期达最高峰，88—1231株／m^2。防治上在亚麻枞形期（株高5—10cm）、杂草2—3叶期选择50％敌草隆＋5％精喹禾灵或50％敌草隆＋56％二甲四氯钠盐，兑水喷雾，防除效果达90％以上。

Research on the Damage and Control of Weeds in Flax Fields in Winter

This article is on the variety,distribution and regularity of weeds in flax fields.There are 101 weeds,belonging to 25 families.26 of them,belonging to 7 families,cause damage.Among them,77 are dicoty ledonous,22 are monocoty ledonous and 2 are fern,or 42 are annual,29 are biyearly and 30 are perennual. Weeds grow after sowing of flax and reach the highest density of 88-1230 weeds per square meters 90%of the weeds could be kiued by spraying diuron 50%and quizalop-P-ethy15%or diuron50%and MCPA-Na56%with water at the fer-needle stage (flax height5-8cm).