马铃薯叶片净光合速率与微气象因子的关系  

Relationship between Leaf Net Photosynthesis Rate of Potato and Its Micrometeorological Factors

作　　者：张磊[1,2] 李剑萍[1,2] 杨勇 袁海燕[1,2] 赵维忠 段晓凤[1,2] 韩颖娟[1,2] 

机构地区：[1]宁夏气象防灾减灾重点实验室,银川750002 [2]宁夏气象科学研究所,银川750002 [3]忻州市气象局,山西忻州034000

出　　处：《西北农业学报》2012年第11期65-68,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家自然科学基金(40765003)

摘　　要：以宁薯4号马铃薯为观测对象,采用大田试验方法,利用CIRAS-1型光合测定仪观测马铃薯叶片净光合速率、蒸腾速率、气孔导度及光合有效辐射、气温、CO2摩尔分数等变化,研究马铃薯叶片净光合速率与其他微环境因子的关系。结果表明,马铃薯叶片净光合速率与蒸腾速率、光合有效辐射、大气水汽浓度均呈"S"曲线关系,与气孔导度、气温、大气CO2摩尔分数呈二次曲线关系,与叶室内外CO2摩尔分数差呈线性关系,与叶室内外水汽浓度差呈乘幂关系。马铃薯叶片净光合速率与微环境因子的关系非常密切,可以用相关环境因子推测叶片净光合速率变化情况。In field, using photosynthesis measure system-CIRAS-1 measured net photosynthesis rate, transpiration rate,conductivity of stomata of ＂Ningxia potato No. 4＂leaf and other environmental fac- tors such as photosynthetic active radiation, air-temperature, CO2 mole fraction, etc. The results showed that potato leaf net photosynthesis rate were ＂S＂curve with transpiration rate, photosynthetic active radiation, vapor concentration, respectively. Net photosynthesis rate of potato leaf were second degree curve with conductivity of stomata,air temp,CO2 mole fraction,respectively. Net photosynthe- sis rate were linear with CO2 mole fraction difference, power relationship with leaf chamber vapor con- centration difference. Some micrometeorological factors could be used to predict net photosynthesis rate.

关 键 词：马铃薯 净光合速率 微气象因子 

分 类 号：S532[农业科学—作物学]