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本研究通过盆栽试验于大豆R_5时期,在晴天(f)和阴天(c)条件下,对大豆叶运动与叶面受光的研究结果表明,大豆各方位的叶数(％),晴天时,西和西南高于东和东北;阴天时,东西水平线以南各方位叶数(％)大致相近。还看出,不论晴阴天时,东西水平线以南高于以北。大豆叶片倾斜方向,主、副倾角,晴天时的叶数(％)正向>负向;阴天时,相反。大豆叶片倾斜角度,主、副倾角,晴天时,正向>负向,阴天时,相反。大豆叶面受光,晴天群体光照强度处于20～30KLx,阴天4～6KLx,多数未达光饱和状态。从叶片分布方位,叶片倾斜方向、角度和叶面受光关系看,在晴天时,由于太阳高度和位置变化,直射光多,主、副倾角正向角度大。为充分利用光能,大豆叶由东南向西南作调位运动。本研究进一步证实了叶枕中钾的含量增高时对叶片直立和扭曲起调节作用。
In this study, the effects of soybean leaf movement and leaf light on the R_5 soybean during sunny days (f) and cloudy days (c) were studied. The results showed that leaf number (% The west and southwest are higher than the east and northeast. On cloudy days, the number of leaves (%) in each direction to the south of the east-west horizontal line is roughly similar. Also see, regardless of sunny days, the east-west level higher than north. Soybean leaves tilt direction, the main dip angle, the number of sunny days (%) positive> negative; cloudy, the opposite. Soybean leaf tilt angle, main, dip, sunny, positive> negative, cloudy when the opposite. Soybean leaves by light, sunny group light intensity at 20 ~ 30KLx, cloudy 4 ~ 6KLx, the majority of light saturation state. From the perspective of the distribution of the blades, the inclination of the blades, the angle and the light-receiving relationship of the foliage, in the sunny day, the direct light is large due to the changes of the sun’s height and position, and the positive and negative angles of inclination are large. To make full use of light energy, soybean leaves from Southeast to Southwest for the positioning movement. This study further confirmed that when the content of potassium in leaf pillow increased upright and twisted leaf play a regulatory role.