叶片叶绿素含量与光合作用有密切关系,是光合特性的一项重要指标,也是栽培生理中常常测定的一项重要内容。稻叶叶绿素含量一般都以每克鲜叶所含叶绿素的毫克数表示,以全叶片作为测定样本。由于不同品种或不同生育期叶片主脉厚度及叶片大小不同,不除主脉测定叶绿素含量,难免会影响不同品种同一生育期或同一品种不同生育期叶绿素含量差异的可比性;若用浸提法取代研磨法,由于叶片主脉从基部往上部逐渐变薄,从剪碎样叶中取一部分浸提时,难于 Leaf chlorophyll content and photosynthesis are closely related to photosynthetic characteristics of an important indicator, but also the cultivation of physiology is often measured an important part. Chlorophyll content in rice leaves are generally expressed in milligrams per gram of fresh leaf chlorophyll, the whole leaf as a test sample. Due to different varieties or different growth stages of the main vein thickness and leaf size, not in addition to measuring the main vein of chlorophyll content, will inevitably affect the different varieties of the same or different varieties of different growth stages of chlorophyll content of different comparability; if the extraction method Instead of the grinding method, since the main vein of the blade is gradually thinned from the base to the upper part, it is difficult to take a part of the extraction from the sheared blade when it is extracted