河南农业科学Issue(1)：54-58,5.
测墒灌溉施肥对冬小麦光合特性及产量的影响
Effects of Irrigation Based on T esting Soil M oisture on Photosynthetic Characteristics and Yield of Winter Wheat
摘要
Abstract
In order to explore the optimal allocation of water and fertilizer coupling ,the experi-ment of irrigation based on testing soil moisture and fertilization coupling was carried out in Tongxu county in alluvial soil area ,the water conditions included no irrigation (W1) ,55% -60%of maximum field capacity (W2 ) ,75% -80% of maximum field capacity (W3 ) ,full irrigation (W4) ,and the fertilization conditions included one time fertilization (N1)and multiple fertilization (N2) ,and the effects of water and fertilizer coupling on photosynthetic characteristics and yield of winter wheat were discussed .The results showed that the net photosynthetic rate and transpira-tion rate of flag leaf increased with the increase of soil moisture ,instantaneous water use efficien-cy first increased and then decreased .The effect of nitrogen application on net photosynthetic rate ,transpiration rate and instantaneous water use efficiency of flag leaf was decided by the soil moisture ,all of them decreased with the increase of nitrogen application under no irrigation condi-tion ,and increased under the other water conditions .There were significant differences between spike length ,spikelet number ,grain number per spike ,1 000-grain weight and yield ,the yield first increased and then decreased with the increase of soil moisture ,reached the peack under W3 water condition ;the effect of nitrogen application on yield was same to that on net photosynthetic rate , transpiration rate and instantaneous water use efficiency of flag leaf ,and the yield of W3N2 treat-ment was 9 293 .19 kg/ha ,which was the highest .There was significantly positive correlation be-tween yield and photosynthetic rate ,transpiration rate ;there was a positive correlation between yield component and yield ,and the order was spikelet number > grain number per spike> spike length>1 000-grain weight .关键词
测墒灌溉/冬小麦/光合特性/产量Key words
irrigation based on testing soil moisture/winter wheat/photosynthetic characteris-tics/yield分类
农业科技引用本文复制引用
潘晓莹,武继承,杨永辉,何方..测墒灌溉施肥对冬小麦光合特性及产量的影响[J].河南农业科学,2014,(1):54-58,5.基金项目
公益性行业（农业）科研专项（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 （）
