用排水法测量小麦叶面积系数

• 出 处: 河北农业科技
• 发表日期: 1984年02期
• 关键词: 排水法 单株叶面积 测量计算 万为 测量方法

现将我们在生产实践中摸索出的排水法介绍如下:取200毫升量筒一支,注水50毫升左右,记下刻度。然后把田间取样得来的若干株(一般10—15株)小麦绿叶全部摘下,叠整齐,用刀片在中部切断,测量其断面厚度(不要测量叶脉和边缘)。测量后将全部叶片放入量筒中,观察记录水位上升的刻度数字。上升后数字减去原来数字,差数为小麦

Now we explore in the production practice Drainage Law introduced as follows: take a 200 ml cylinder, water injection about 50 ml, note the scale. Then some of the field samples from the plant (usually 10-15 strains) all the green leaves of wheat off, neatly stacked, with a blade in the middle cut off, measure the thickness of the cross-section (not to measure the veins and edges). After measuring all the leaves into the measuring cylinder, observe the record water level rising scale. After the increase minus the original figures, the difference is wheat