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叶片是光合作用的主要器官,豆荚是构成产量的因素之一,二者关系极其密切又比较复杂。本试验表明,去叶处理,有叶节叶片的光合产物并非只供给本节荚,还可以同去叶节荚输送,形成有叶节60％以上的产量。去叶处理,荚、粒数减少,粒重降低,叶是产量的限制因素。去荚处理,单株荚数、粒数、秕粒数减少,养分在叶片内“积累”,叶色较深,成熟期推迟,荚对产量起了限制作用。试验还表明,叶面积指数在3.7—4.8范围内与产量呈直线线性关系;通过整枝调整叶片在不同层次的分布,增加叶片厚度,又可获得增产。由此可见,协调叶(源)荚(库)关系是获得高产的关健。
Leaf is the main organ of photosynthesis, pod is one of the factors that constitute the yield, the relationship between the two extremely close and more complicated. This experiment shows that leaf removal, leaf blade photosynthetic products not only supply this pod, but also with the leaf node pod delivery, the formation of more than 60% leaf yield. Leaf removal, pods, grain number reduction, grain weight reduction, leaf yield constraints. To pod processing, pods per plant, grain number, grain number reduced, nutrient accumulation in the leaves, darker leaf color, delayed maturity, pods on the yield played a limiting role. The experiment also showed that the leaf area index showed a linear linear relationship with the yield in the range of 3.7-4.8. By adjusting the distribution of leaves at different levels and increasing the thickness of leaves, the yield could be increased. This shows that the coordination of leaf (source) pod (library) relationship is the key to high yield.