水稻专用叶面营养液对水稻生长及其主要生理特性的影响  

Effect of Special Foliar Nutrient Solution for Rice on Growth and Physiological Characteristics of Rice

作　　者：肖参明[1] 黄继茂[1] 刘国坚[1] 柯玉诗[1] 黄群声[2] 李娘辉[2] 张铭光[2] 

机构地区：[1]广东省农科院土壤肥料研究所,广州510640 [2]华南师范大学生物系,广州510631

出　　处：《热带亚热带土壤科学》1998年第1期11-15,共5页

摘　　要：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.Field trials for four years and demonstrations on different soils were conducted to study the optimum spraying stage of special foliar nutrient solution and its effects on main morphological and physiological characteristics of rice such as root activity, nutrient uptake, leaf chlorophyll contend photosynthesis rate, and the yield. The resultS indicated that the optimum spraying stage was within 7～10 days and optimum spraying times once after rice transplanting. In comparison with the control treatment, foliar spray of special nutrient solution greatly resulted in increase in root activity in active tillering and milking stage, leaf chlorophyll content in active tillering stage, flag leaf chlorophyll content, protein content and photosynthesis rate in milking stage, and uptake of N, P and K. These significant physiological changes of rice helped it to yield more numbers of tillering. and of effective tiller and stump straw. Furthermore, the flag leaves photosynthesis function and carbohydrates translocation into panicle raised greatly, and for these reasons, 1 000-grain weight of rice increased and the yield increased by 13%.

关 键 词：专用叶面营养液 喷期 水稻 生理效应 生长 

分 类 号：S511.062[农业科学—作物学]