扁秆藨草的发生分布与耕作栽培制度关系密切，实生苗萌发迟而集中，再生苗萌发早而分散，是防除的主要对象。
The emergence of its seedling is later and concentrated than its regrowths which are the main object to control.
集约栽培条件下，黑麦草近距离间作紫云英，黑麦草刈割后再生速度极显著地快于单作黑麦草刈割后的再生速度。
The growth speed of ryegrass regeneration shoots in intercropping with Chinese milk vetch faster than in single cropping by more than 50%.
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