Effects of Sow ing Dates on Individual and Population Development and Yield of Zhengmai 7698
TIAN Wei
GUO Zhensheng
HU Jinghui
ZHANG Shenju
LIU Yanxia
HUANGFU Ziqi
Abstract：To provide the suitable sowing date for wheat variety Zhengmai 7689 ,the effects of dif-ferent sowing dates on the development of individuals and population and grain yield of Zhengmai 7698 were studied .The result showed that ,with the postponement of sowing date ,the plant height and leaf number of main stem in Zhengmai 7698 reduced .The sowing date had the signifi-cant negative correlation with the ear number and the yield ,the correlated coefficients being-0.935**and -0.886*,respectively .Based on the regression analysis ,the regression model of Zhengmai 7698 was established :y(ear number)=759 .8-40 .2x ,and y(yield)=10 827-552.7x . When the sowing rate was 150 kg/ha ,the suitable sowing date of Zhengmai 7698 was from 10th to 15th of October ,which was beneficial to forming the reasonable population structure ,and achieving the higher economic production and efficiency .
Keywords：winter wheatZhengmai 7698sowing dateyieldyield structure
Publication Date：2013-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 18-21 )