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蚕豆生长发育过程中干物质消耗、积累与贮藏的状况,蚕豆株高、绿叶数多少,叶面积系数大小,叶片中叶绿素含量高低,群体受光状态等都是进行蚕豆生产与科研中所关心的重要指标。蚕豆播种出苗阶段,种子内贮藏的干物质逐渐消耗,至第一张真叶展开即进入断奶期,到三叶期为超重期。自现蕾期开始其株高增长与干物重积累总量均里“S”型。单株绿叶数和叶面积系数的发展在结荚期达到高峰,为一单峰曲线。蚕豆拥有多张功能期叶片,同一植株上不同叶位叶片的叶绿素含量在2～4mg/dm~2之间,呈抛物线分布。蚕豆单叶光强补偿点为500Lux 左右。大田中群体受光强度随天气与昼夜有明显的日间差异和日内变化。群体内不同高度各层次透光率自上而下逐渐降低。各有关生育指标因品种特性不同而不同,也受栽培技术措施的影响而变化,通过不同栽培技术措施对各指标影响的分析,可望对筛选优良品系、确定高产栽培技术措施有一定的参考价值。
The growth and development of broad bean during the growth and development of dry matter consumption, the status of accumulation and storage, broad bean plant height, the number of green leaves, the leaf area coefficient size, chlorophyll content in leaves, the population of light state are all important for production and scientific research of broad bean index. Broad bean sowing seedling stage, the seeds stored in the dry matter gradually consumed, until the first true leaf spread into the weaning period, to the trefoil period of overweight. Since the budding stage of its plant height growth and total dry matter weight accumulation in the “S” type. The development of leaf number and leaf area coefficient per plant reached a peak at podding stage, which was a single peak curve. Broad bean has multiple functional leaves, chlorophyll content of leaves with different leaf positions on the same plant is between 2 ~ 4mg / dm ~ 2, parabola distribution. Broad bean single leaf light intensity compensation point is about 500Lux. Field groups in the light intensity with the weather and day and night obvious daytime differences and intraday changes. The light transmittance of different levels and groups at different levels gradually decreased from top to bottom. The related fertility indices vary with the characteristics of the cultivars and also vary with the cultivation techniques. The analysis of the effects of different cultivation techniques on each index is expected to have some reference value for screening good lines and identifying high-yielding cultivation techniques and measures .