Effect of Sowing Date,Basic Seeding,Nitrogen Fertilization and Water on the Growth Duration and Grain Yield of RiceYongyou 8
WEN Dan
HE Wen-jing
GAO Jian-hua
YUAN Zhi-hua
QIU Xian-jin
XING Dan-ying
XU Jian-long
ZHONG Yu-hai
Abstract：In order to select the optimum cultivation combination,we conducted orthogonal experiments to hybrid japonica rice Yongyou 8 from different sowing date,basic seeding,nitrogen application rate and water. The results showed that the whole growth duration (y)was significantly influenced by sowing date(x)(F=82. 71﹥F0. 05),which had significant negative correlation(y= -0. 4x+149. 67(R=0. 9 986*)). Effective panicles were significantly influenced by basic seeding(F=52. 74﹥F0. 05. There was positive correlation between basic seeding and effective panicles,but negative correlation between grain filling and 1 000-grain weight. Both seeding date and nitrogen fertilization had remarkable influence on the yield of Yongyou 8. Meanwhile,planting density had greater effect on the yield. The study suggested that the optimum cultivation combination of Yongyou 8 was that sowing date was May 5 and planting densities were 5. 46 × 103/667 m2 . And then nitrogen application rate was 20 kg/667 m2 with suitable water on soil surface.
Keywords：Japonica riceSowing datePlanting densityNitrogen fertilizationWaterGrowth durationYield
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 30-32,33 )