Effect of Irrigating Time after Flowering on Soil Water Content, Functional Period of Leaves and Yield of Wheat
FENG Rongcheng
LIU Qingrui
WANG Lu
Abstract：In order to clarify the alleviation effect of dry-hot wind harm by irrigating in different time after flowering of wheat,four kinds of irrigating modes were chosen as irrigating at 5 d after flowering(W1),ir-rigating at 8 d after flowering(W2), irrigating at 11 d after flowering(W3),and no irrigation after flowe-ring ( CK) .The results showed that at the first day of dry-hot wind the the soil water contents of W1 and W2 treatments were higher than that of W3 and CK treatments.At 5 d after dry-hot wind the soil water contents of W2 and W3 treatments were higher than that of W1 treatment,and the soil water contents of W1,W2 and W3treatments were higher than that of CK.Compared with CK,W1,W2 and W3 treatments could retarding the senescence of wheat leaves .And the leaf functional period order was W2>W1>W3>CK.W1,W2 and W3 treatments could extend the filling period of wheat ,the filling period order was W2>W1>W3>CK,which were 6 d,5 d,4 d longer than that of CK.The 1 000-grain weight and grain yield of W1,W2 and W3 treatments were significantly higher than those of CK,of which order was W2>W1>W3>CK.Compared with CK,grain yield of W2,W1 and W3 treatments increased by 26.5%,17.2%and 11.6%,respectively.Overall,irrigating in different time after flowering all relieved the dry -hot wind harm ,had the positive effect on soil water content,leaf functional period and yield,and W2 treatment had the best combined effect.
Keywords：wheatirrigationdry-hot windsoil water contentyield
Publication Date：2015-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 11-14 )