The factor of cotton canopy is very important for researches on cotton photosynthesis and evapotranspiration and creation of cotton high yield plant type.
棉田群体冠层特征对于研究棉花光合作用、蒸散作用等和创建棉花理想的高产株型模式非常重要。
A one-factor experiment was designed to investigate the effects of plant extracts on growth performance and slaughter characteristics in meat-type ducks in the late growth stage.
采用单因子试验设计，研究了天然植物提取物对生长后期肉鸭生长性能和屠宰性能的影响。
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