Effect of Sowing Date on Growth and Yield of Mechanical Transplanting Rice in South Henan
SUN Jianjun
YIN Haiqing
CHENG Xiangong
WANG Fuhua
WANG Ya
WANG Yuetao
ZHAI Shunguo
JIANG Mingbo
WANG Shengxuan
Abstract：The effects of sowing date on growth period,yield and its component were studied with the hy-brid rice of Yliangyou No. 1,Yangliangyou No. 6,and Yliangyou No. 2 as experiment materials in south Henan. The results showed that the periods of jointing,heading and maturity of different varieties rice were correspondingly delayed,and whole growth period showed a significant decreasing trend along with the de-laying of seeding date. If the sowing date was delayed 5 days and the whole growth periods shortened 2. 8 days. With the seeding date delaying,the yield component were all declined,and yield ecreased signifi-cantly,but decreased amplitude of different varieties were different. The influence order of sowing date was grains per panicle >seed setting rate >panicle number >1 000-grain weight. The correlation analysis showed that there was significant relationship betwwen sowing date and yield and its components. The yield potential of Yliangyou No. 2 was highest,and implementation rate on yield potential of Yangliangyou No. 6 was highest under sowing date influence. The average yield of three mechanized transplanting hybrid indices decreased by 613. 3—646. 7 kg/ha,when the sowing date was delayed 5 days.
Keywords：seeding datesouth Henangrowth characteristicsmechanical transplanting ricegrowth periodyield
Publication Date：2015-12-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 15-19,25 )