Effects of Limited Irrigation and Phosphorus on Leaf Photosynthesis and WUE of Winter Wheat
ZHENG Cai-xia
ZHANG Fu-cang
ZHANG Zhi-liang
NI Fu-quan
Abstract：The experiment was completed in the field to study the effects of limited irrigation and phosphorus on leaf photosynthesis of winter wheat in whole growing stage.The result showed that effect of limited irrigation and phosphorus on physiological Index of winter wheat.Applying phosphorus mainly improve the activity of crop photosynthesis,resulting in the increase of short-time water use efficiency.Irrigation mainly accelerates transpiration rate of winter wheat,leading to the decrease of P/E.It is non-linear relationship between transpiration and photosynthesis of Winter wheat.The photosynthesis rate increases slowly with the increase of transpiration rate,and to some extent photosynthetic rate no longer increased.There was a linear negtive correlation between transpiration rate and water use efficiency of winter wheat,The WUE decreases slowly with the increase of transpiration rate.Irrigation water 180 mm and phosphorus 120 kg/hm~2 were better water saving effect of winter wheat under this experiment condition.
Keywords：irrigationphosphoruswinter wheatphotosynthesisWUE
Publication Date：2009-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 78-80,90 )