论文部分内容阅读
本试验研究大豆不同追肥时期的增产效果及生理指标变化规律。研究结果表明，大豆追肥最佳时期为开花初期（６月２５日），此时叶片数８６片，叶面积指数为１３６，净光合生产率为６５ｇ／（ｍ２·ｄ）。
This experiment studied the different soybean topdressing yield and physiological indicators of the law of change. The results showed that the optimum period of soybean topdressing was early flowering (June 25). At this time, the number of leaves was 8.6, the leaf area index was 1.36 and the net photosynthetic productivity was 6.5 g / (m2 · d).