Effects of Water and Fertilizer Application Strategies on Winter Wheat Photosynthetic Characteristics,Yield and Water Use
YANG Yonghui
WU Jicheng
HE Fang
PAN Xiaoying
ZHANG Jiemei
WANG Yue
HAN Weifeng
Abstract：To explore the effects of water and fertilizer application on yield and water use of winter wheat, a field experiment was conducted to investigate the effects of different nitrogen topdressing proportions ( N0:base fertilizer 100%,N1:base fertilizer 40% +jointing stage 30% +filling stage 30%,N2:base fer-tilizer 60% +jointing stage 20% +filling stage 20%,N3:base fertilizer 70% +jointing stage 30%) and irrigation amount ( W0:0 m3/ha once,W1:225 m3/ha once,W2:450 m3/ha once) on soil moisture,pho-tosynthetic characteristics,yield and water use of winter wheat. The results showed that different nitrogen topdressing proportions and irrigation amount improved wheat photosynthetic characteristics, promoted growth,and increased yield and water use of wheat. At the filling stage wheat water requirement was rela-tively strong for wheat,profile soil moisture among treatments was most significantly different,the soil wa-ter content of W2N3 treatment was the highest. In all treatments,the net photosynthetic rate of W2N2 treatment was the highest, the leaf water use efficiency of W1N2 treatment and W2N2 treatment were higher than the other treatments,the yield and water production efficiency of W2N2 treatment were the highest,which increased by 33. 5% and 23. 8% respectively compared with the control(W0N0). Overall, W2N2 treatment was the best.
Keywords：wheatirrigation amountnitrogen fertilizerphotosynthetic characteristicsyieldwater use
Publication Date：2015-05-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 67-71 )