论文部分内容阅读
作物叶面积的大小直接影响它对光能的利用和光合作用产物的形成和积累,同时又是生育过程中光能利用状况的动态表现,是及时采取促控措施的依据,所以它作为高产栽培中的一项重要指标被人们所重视。叶面积的大小一般用叶面积指数(或称叶面积系数LAI)来表示,其含义就是全田的绿叶面积与土地面积的比值。测定叶面积的方法很多,有离体测定(即取样摘下叶片测定)和不离体(即在植株上测定)测定两大类,具体的方法有系数
The size of the crop leaf area directly affects its use of light energy and the formation and accumulation of photosynthetic products, and is also the dynamic manifestation of the light energy utilization in the process of reproduction, which is the basis for promptly taking the promotion and control measures. Therefore, One of the important indicators in people’s attention. Leaf area is generally the size of the leaf area index (or leaf area index LAI) to represent the meaning of the whole field of green leaf area and land area ratio. There are many ways to determine the leaf area, there are two major categories of in vitro assays (ie, sampling off the leaves measured) and non-ex vivo (ie, measured on the plant), the specific method has a coefficient