Effects of Irrigation at Different Growth Stages on Growth and Yield of Wheat

CHEN Jinping; YIN Zhigang; ZHOU Guoqin; WANG Jianhua; XIONG Guixun; LI Zhou; YU Lixin; MA Haiying; WANG Guangfu

doi:10.15933/j.cnki.1004-3268.2016.03.007

Abstract：In order to explore wheat growth and population development rule after continuous irrigation, solving heat moisture damage and waterlogging problems in southern Henan province, the effect of continuous irrigation on the growth,population development and yield of wheat were studied with wheat cultivar Rising 1 as the testing material in priming winters stage,wintering stage,returning green stage and booting stage,filling stage and maturity stage. Wet conditions were created by using artificial continuous irrigation. The results indicated that the effect of continuous irrigation at different growth stages were not consistent,the continuous irrigation were done at returning green stage and booting stage,wheat leaf age, tillering and secondary roots number had a significant reduction;the continuous irrigation were done at priming winters stage,returning green stage,booting stage,mid and end filling stage,the dry weight per unit area was decreased by 11 . 2%, 7 . 3%, 14 . 7%, 22 . 0% and 13 . 4% compared with control respectively. The total stem number of treatments was in peak at returning green stage,and basically stable from booting stage to mature stage. The continuous irrigation was done at priming winters stage,the total stem number significantly decreased by 12. 2% compared with control. The continuous irrigation was done at returning green stage,the highest total stem number significantly decreased by 14. 7% compared with control. The continuous irrigation were done at wintering stage,booting stage,filling stage,the total stem number was not significant different compares with control,and the earring-tiller rate was the lowest when irrigation was done at booting stage. The continuous irrigation were done at priming winters stage,booting stage,filling stage in the early and marture stage,wheat yield significantly decreased by 8. 1%,3. 3%, 10. 9%,8. 6% and 9. 0% compared with control respectively. The continuous irrigation were done at wintering stage,the wheat yield had not a significant difference compared with control.