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以杂交晚稻品种H优518和盛泰优9712为材料,于2014年在湖南省浏阳市沿溪镇进行了机插水稻秧龄弹性试验,比较研究不同秧龄条件下机插水稻的秧苗素质、机插质量、生长发育及产量形成,以确定机插水稻的适宜秧龄范围,为实现机插水稻高产高效生产提供依据。结果表明:秧龄过长,机插水稻的秧苗素质变差;随着秧龄延长,机插质量变差,各生育时期的叶龄数增加,分蘖数呈逐渐下降趋势,叶面积指数减小,干物质积累量也逐渐减少,有效穗数、每穗总粒数、结实率及千粒重降低,产量也降低。在本研究设置的25~37 d秧龄范围内,两参试品种均以25 d秧龄处理为最佳。
In late hybrid rice H You 518 and Shengtai you 9712, we conducted spring seedling age testing of machine-inserted rice in Yanxi, Liuyang City, Hunan Province in 2014. The effects of seedling quality, , Growth and yield formation, in order to determine the appropriate range of machine-inserted rice seedling age, in order to achieve machine-inserted rice high yield and efficient production provide the basis. The results showed that: the seedling age was too long, the quality of rice seedling became weaker; with the extension of seedling age, the quality of the seedling decreased, the number of leaf age in each growth period increased, the tiller number decreased gradually, the leaf area index decreased, The amount of material accumulation also gradually decreased, the effective panicle number, the total grain number per panicle, the seed setting rate and the 1000-grain weight decreased, and the yield also decreased. Within the 25-37 d seedling age range set in this study, the two tested varieties were best treated with 25-day-old seedling age.