Effects of different sowing dates on growth and yield of late rice varieties Yueyou 9113 and Yueyou 360.

Yueyou 9113 and Yueyou 360 are new late rice varieties bred by Yueyang Institute of Agricultural Sci-ences,Hunan.The present experiment has been conducted to study the effects of different sowing dates on growth and yield of these two late rice varieties in order to explore their ecological adaptability in Guilin and to study the control mea-sures for avoiding cold.Variety Jinyou 207 was used as the control.The results showed that the whole growth period of three varieties was postponed with the sowing date delay.The yield stability and cold resistance of Jinyou 207(CK) was found to be the best followed by the variety Yueyou 360.Both Yueyou 9113 and Jinyou 207 showed similar yields.The suitable dates for sowing Yueyou 9113 and Yueyou 360 varieties were between 25th June and 5th July.