河南农业科学Issue(1)：59-63,5.
水肥条件对潮土区不同小麦品种光合特性的影响
Effect of Water and Fertilizer on Photosynthetic Characteristics of Different Wheat Varieties in Alluvial Soil Area
摘要
Abstract
In order to explore the effect of water and fertilizer on photosynthetic characteristics of different wheat varieties ,the net photosynthetic rate ,transpiration rate and instantaneous water use efficiency of Aikang 58 and Zhoumai 18 were measured at jointing stage ,anthesis stage and grain-filling stage under different water and fertilizer conditions in loam alluvial soil in Tongxu county .The water conditions included no irrigation ,mild drought stress and full irrigation ,the times of nitrogen fertilizer topdressing included zero ,once(reviving to jointing stage )and twice (jointing and grain filling stage) .The results showed that the photosynthetic rate of two wheat varieties increased with the growth of wheat ,and the treatment with additional fertilizer at join-ting and grain filling stage under mild drought stress was beneficial to improve photosynthetic rate compared with other treatments ,especially Aikang 58 .The effect of different water and fertilizer conditions on transpiration rate of Zhoumai 18 at different growth stage was greater than that on Aikang 58 .At jointing stage ,the transpiration rate of the treatment with additional fertilizer at jointing and grain filling stage under mild drought stress was the lowest for Zhoumai 18 ,while it was lower for Aikang 58 .At flowering stage ,the highest one of the transpiration rate for two wheat varieties was the treatment with additional fertilizer at reviving to jointing stage without ir-rigation ,and the second was the treatment with additional fertilizer at jointing and grain filling stage under mild drought stress ,the treatment without topdressing with full irrigation was lowest for Zhoumai 18 ,while the treatment without topdressing under mild drought stress was lowest for Ankang 58 .At grain filling stage ,the highest one of the transpiration rate for two wheat varieties was the treatment without topdressing and irrigation ,the lowest one was the treatment without topdressing and the treatment with additional fertilizer at reviving to jointing stage under mild drought stress .The instantaneous water use efficiency of two wheat varieties first decreased and then increased with the growth of wheat ,but the increase range was different ,which of Zhoumai 18 was greater than Aikang 58 .In a word ,mild drought stress was conducive to improve the net photosynthetic rate and instantaneous water use efficiency ,and decrease transpiration rate ,espe-cially the treatment with additional fertilizer at join-ting and grain filling stage ,and the photosyn-thetic capacity of Zhoumai 18 was higher than Aikang 58 .关键词
潮土/小麦/水肥条件/光合特性Key words
alluvial soil/wheat/water and fertilizer/photosynthetic characteristics分类
农业科技引用本文复制引用
郑惠玲,杨永辉,武继承,潘晓莹,李学军..水肥条件对潮土区不同小麦品种光合特性的影响[J].河南农业科学,2014,(1):59-63,5.基金项目
公益性行业（农业）科研专项经费项目（201203077）；“十二五”农村领域国家科技计划课题（2013BAD07B076）；河南省重大公益性科研项目 （）
