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Occurrence dynamics and control strategies of weeds in rapeseed fields
CHEN Yanlou, XU Shuang, KANG Qizhong
Anhui Agricultural Science Bulletin, 2025, 31(7): 64-68.   DOI: 10.16377/j.cnki.issn1007-7731.2025.07.016

层次 盖度/％
Ⅰ级（轻） Ⅱ级（中） Ⅲ级（重）
杂草与作物高度相当或高于作物 <10 10～20 >20
杂草高度占作物高度的1/2以上 <15 15～30 >30
杂草高度不及作物高度的1/2 <20 20～40 >40
表1 “三层三级”草害调查法
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ISSN 1007-7731　CN 34-1148/S
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