叶片是农作物的主要同化器官。叶面积与作物产量,品质有着密切的关系,测算作物的光能利用率,光合生产率,蒸腾强度和叶面积指数等生理指标,都需要测定叶面积。因此,叶面积的计算是农业科研和生产中一个重要的计量指标。目前,其近似计算公式一般采用: S≈LBK 其中,S为叶片面积,L为叶片长度,B为叶片最大宽度,K为叶面积调整系数。 向日葵叶片的长度和最大宽度在田间可以直接度量。因此,叶面积计算的关键在于正确 Leaves are the main assimilating organ of crops. Leaf area and crop yield, quality are closely related to calculate the crop light utilization, photosynthetic productivity, transpiration and leaf area index and other physiological indicators, the need to determine the leaf area. Therefore, the calculation of leaf area is an important indicator of agricultural research and production. At present, the approximate formula is generally used: S≈ LBK where S is the leaf area, L is the leaf length, B is the maximum leaf width and K is the leaf area adjustment coefficient. Sunflower leaf length and maximum width in the field can be measured directly. Therefore, the key to leaf area calculation is correct