CAJ | 학술논문

对湖南省棉花主产区棉田杂草的种类、发生规律及化学除草情况进行了调查。结果发现，湖南省棉田常见杂草包括12科，28种，其中禾本科杂草占25．00％，阔叶杂草占67．86％，莎草科占7．14％；一年生杂草占78．57％，多年生杂草占21．43％。相对多度10％以上的杂草有7种，其中马唐、牛筋草、千金子、铁苋菜、小飞蓬5种杂草为湖南省棉田杂草的优势种，相对多度分别为37．79％、33．64％、29．15％、26．23％、23．83％。杂草发生呈现3个高峰期，分别为5月下旬，6月中下旬，7月下旬至8月初，杂草防除主要采用苗前土壤处理和苗后茎叶处理相结合的化学防除方法。
대호남성면화주산구면전잡초적충류、발생규률급화학제초정황진행료조사。결과발현，호남성면전상견잡초포괄12과，28충，기중화본과잡초점25．00％，활협잡초점67．86％，사초과점7．14％；일년생잡초점78．57％，다년생잡초점21．43％。상대다도10％이상적잡초유7충，기중마당、우근초、천금자、철현채、소비봉5충잡초위호남성면전잡초적우세충，상대다도분별위37．79％、33．64％、29．15％、26．23％、23．83％。잡초발생정현3개고봉기，분별위5월하순，6월중하순，7월하순지8월초，잡초방제주요채용묘전토양처리화묘후경협처리상결합적화학방제방법。
Weed species,occurrence regularity and chemical control status were investigated in cotton fields in Hu-nan Province. The results showed that there were mainly 28 weed species which belong to 12 families,including 25.00% of the Gramineae weeds,67.86% of broadleaf weeds and 7.14% of Cyperaceae weeds;78.57% of annual weeds and 21.43% of perennial weeds. Relative abundances of 7 weeds species were over 10% . Digitariasangui-nalis,Eleusineindica,Leptochloachinensis,Acalyphaaustralis and Conyzacanadensis were the dominant weeds, with relative abundances of 37.79% ,33.64% ,29.15% ,26.23% and 23.83% ,respectively. The weeds have three occurrence peaks,which were in late May,in mid and late June and in late July to early August,respectively. The weeds in cotton fields were controlled by pre-emergence herbicides with the combination of post-emergence herbi-cides.