flixweed相关论文
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
对播娘蒿的生物学特性及其与冬小麦竞争的研究结果表明,播娘蒿种子在0 ̄20cm土层内均有分布,但主要在0 ̄5cm土层内,其种子在春秋两季都可萌发,早春萌......
For more than two decades acetolactate synthase (ALS) inhibiting herbicides have been the major weed control tools in wi......