The analysis shows That the season, the fields topography, and measures for cultivation are the main factors influencing the distribution of weed communities in paddy fields in this region.
分析表明，生长季节、栽培措施、地形地貌是影响本地区稻田杂草群落分布的主要因素。
Although leaf photosynthesis of this weed is of the C3 type, a C4-like vascular bundle full of chlorophyll was observed in the main vein of the leaf and young stems.
尽管薇甘菊叶片为典型C3植物特征，结果发现了茎以及主叶脉内存在类似C4途径的、具有丰富叶绿体的维管束鞘结构。
The phytocidal composite efficiently expands the weed control spectrum and has better control efficiency to the main grassy weed and the broadleaves in the cotton field.
本 除草组合物有效的扩大了杀草谱，对棉花田中的主要禾本科杂草和阔叶杂草均 有较好的防效。
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