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研究了钾素对杂交水稻个体与群体的生理效应。结果表明:钾通过提高光合速率、光合面积、光合势、净同化率及相对延长光合时间,增强杂交水稻的光合机能;钾促进碳水化合物的合成和低糖向多聚糖的转化,使抽穗期水稻光合器官中的还原性糖含量和贮藏器官中的淀粉含量增加;钾能提高蔗糖酶活性,降低呼吸速率,增加经济系数:钾促进杂交水稻的养份吸收机能,表现出个体根量、根系活力的增加和群体养分积累量、积累速率的提高。
The physiological effects of potassium on individuals and populations of hybrid rice were studied. The results showed that potassium enhanced the photosynthetic capacity of hybrid rice by increasing photosynthetic rate, photosynthetic area, photosynthetic potential, net assimilation rate and relative photosynthetic duration. Potassium promoted the synthesis of carbohydrates and the conversion of low sugar to polysaccharide, Reducing sugar content in photosynthetic organs and starch content in storage organs increased. Potassium increased sucrase activity, decreased respiration rate and increased economic coefficient. Potassium promoted the nutrient absorption capacity of hybrid rice, and showed root volume, root vigor Increase and the accumulation of group nutrients, the accumulation rate of increase.