| 不同磷素营养水平对水稻剑叶光合特性的影响 |
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| 引用本文： | 李跃娜,侯立刚,齐春艳,孙洪娇,刘亮,隋朋举,郭晞明,赵国臣.不同磷素营养水平对水稻剑叶光合特性的影响[J].农业科学与技术,2010,11(6):11-14. |
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| 作者姓名： | 李跃娜 侯立刚 齐春艳 孙洪娇 刘亮 隋朋举 郭晞明 赵国臣 |
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| 作者单位： | 李跃娜(吉林大学植物科学学院,吉林长春,130062);侯立刚,齐春艳,孙洪娇,刘亮,隋朋举,郭晞明,赵国臣(吉林省农业科学院水稻研究所,吉林公主岭,136100) |
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| 基金项目： | Key Technique Research on Middle and Low Yield Paddy Field Improvement in Jilin Middle Part (20096026).吉林省中部中低产水田生产能力提升关键技术研究 |
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| 摘 要： | 目的]为水稻的磷高效栽培调控提供科学依据。方法]以长白9号（CB9）和吉粳81（JJ81）2个粳稻品种为试材进行盆栽试验,各品种分别设5个磷肥水平（P0～P4）,在灌浆期测定剑叶净光合速率、叶色值（SPAD）、气孔导度、蒸腾速率、胞间CO2浓度、气孔限制值等光合特性指标。结果]CB9净光合速率在P3处达到最大,并与其余各组间差异显著（P〈0.05）;JJ81各处理组净光合速率均高于对照,并在P4处达到最大。CB9和JJ81的SPAD值均在P3处达到最大;随着施磷量的增加,2个品种的气孔导度和蒸腾速率均表现出先增加后降低的趋势。随着施磷量的增加,CB9的胞间CO2浓度先降低后增加,而JJ81的胞间CO2浓度先增加后降低。2个品种的气孔限制值变化趋势均与胞间CO2浓度变化趋势相反。结论]适当增施磷肥均能提高水稻剑叶光合特性,但2个品种间存在基因型差异。
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| 关 键 词： | 磷素营养 水稻 剑叶 光合特性 |
Effects of Different Levels of Phosphorus Nutrient on the Photosynthesis Characteristic of Rice Flag Leaf |
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| LI Yue-na,HOU Li-gang,QI Chun-yan,SUN Hong-jiao,LIU Liang,SUI Peng-ju,GUO Xi-ming,ZHAO Guo-chen.Effects of Different Levels of Phosphorus Nutrient on the Photosynthesis Characteristic of Rice Flag Leaf[J].Agricultural Science ＆ Technology,2010,11(6):11-14. |
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| Authors: | LI Yue-na HOU Li-gang QI Chun-yan SUN Hong-jiao LIU Liang SUI Peng-ju GUO Xi-ming ZHAO Guo-chen |
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| Institution: | 1. School of Plant Science, Jilin University, Changchun 130062; 2. Rice Research Institute, Jilin Academy of Agricultural Science and Tech- nology, Gongzhuling 136100 |
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| Abstract: | Objective] To provide scientific basis for high phosphorus efficiency cultivation and regulation of rice. Method] Changbai9 （CB9） and Jijing81 （JJ81） were used as experimental materials for pot experiment, and five levels of phosphorus nutrient （ Po - P4 ） were set for each variety, the net photosynthesis rate, Chlorophyll Meter Readings （SPAD Readings）, stomatal conductance, transpiration rate, intercellular CO2 concentration, and stomatal limitation were observed and compared between five different phosphorus levels at filling stage. Result] The net photosynthesis rate of CB9 reached the highest at P3, and was significantly different from other treatments （P 〈0.05）;the net photosynthesis rate of groups with phosphorus of J J81 were higher than that of the control group,and reached the highest at P,. The SPAD Readings of CB9 and JJ81 all achieved the highest at P3, and stomatal conductance and transpiration rate were all at first increased then decreased with the phosphor- us increased in CB9 and JJ81. With the phosphorus increased, intercellular CO2 concentration of CB9 decreased at first and then increased, while in JJ81 the trend was inversed,but the tendency of intercellular CO2 concentration were opposite to that of stomatal limitation in both culti- vars. Conclusion] Appropriate adding phosphorus could improve photosynthetic characteristic of rice flag-leaf,but displayed significant genotypic difference. |
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| Keywords: | Phosphorus nutritionl Rice Flag leaf Photosynthetic characteristic |
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