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通过田间小区试验及大田示范的对比，研究了专用叶面营养液的适宜喷期及其对水稻的生理特性：根系活力、养分吸收、叶片叶绿素含量、光合速率等和产量的影响.研究结果表明：适宜喷期在植后7-10天，并喷施1次，效果最好.专用叶面营养液使水稻根系活力在分蘖盛期、灌浆期明显提高;显著提高分蘖盛期叶片及灌浆期剑叶的叶绿素含量，促进剑叶提高光合速率及水稻对N、P、K营养的吸收;增加水稻灌浆期剑叶蛋白质含量.水稻喷施叶面营养液在生理上发生显著变化，促进分蘖增加，有效穗增加，稻秆矮壮,通过增加水稻灌浆期叶片的光合能力而加速碳水化合物向穗部的输送，达到增加千粒重及产量的目的.
Through field plot experiment and field demonstration, the suitable spraying period of special foliar nutrient solution and its effects on physiological characteristics of rice: root vigor, nutrient uptake, leaf chlorophyll content, photosynthetic rate and yield were studied. The results show that : Spraying appropriate spraying 7-10 days after planting and sprayed 1 times, the best effect. Special foliar nutrition so that the root activity of rice at tillering stage, grain filling stage was significantly improved significantly increase tillering stage leaves and filling stage The content of chlorophyll in the flag leaf increased the photosynthetic rate of flag leaf and the absorption of N, P and K nutrients in rice leaves, and increased the content of flag leaf protein in the grain filling stage of rice. Physiological changes occurred on the foliar nutrient solution and the increase of tiller , The effective panicles increased, and the short stalks of rice straw accelerated the transport of carbohydrates to the panicles by increasing the photosynthetic capacity of rice leaves at grain filling stage, so as to increase the 1000-grain weight and yield.