贵州山区超级稻不同秧龄移栽的影响效果分析

利用贵州省黔东南州天柱县高酿镇超级杂交水稻准两优527、陆两优106和黔优88的大田试验资料，分析了不同秧龄移栽方式对水稻生长和产量的影响。结果表明：准两优527品种全生育期所需的最佳积温3400℃·d左右、光照750h左右；陆两优106品种全生育期所需的最佳积温3200℃·d左右、光照700h左右；黔优88品种全生育期所需的最佳积温3700℃·d左右、光照800h左右。三个超级杂交水稻品种平均单产均超过800kg／667m^2，准两优527的产量最高，陆两优106次之，黔优88最小，均达到高产要求；超级稻采用小苗移栽方法，使其生育期长（较中苗移栽长6～10d），增加有效积温、光照的累积，有利于超级稻生长发育，所以，采用小苗移栽的产量比中苗移栽的高123．0～339．3kg／hm^2，尤以陆两优106品种增产显著。研究结果可为超级稻品种在贵州山区的合理布局和种植推广提供参考。

Analysis of Effects of Transplanting at Different Seedling Ages of Supper Hybrid Rice in Mountain Areas of Guizhou Province

Based on the field experiment data of three supper hybrid rice varieties Zhunliangyou 527, Luliangyou 106 and Qianyou88 in Tianzhu County of Southeast Guizhou, effects of the transplanting at different seedling ages on rice growth and yield were analyzed. The results showed that the variety Zhunliangyou 527 required an optimum accumulated temperature of 〉 10℃ was with 3400℃ and sunshine hours with 750 hours; The variety Luliangyoul06 required an optimum accumulated temperature of 〉 10℃ was with 3200℃ and sunshine hours with 700 hours ; As for variety Qianyou 88, an optimum accumulated temperature of 〉 10℃ with 3700℃ and sunshine hours with 800 hours were needed. The average yield per unit of three varieties reached at 800kg/ha, which met the requirements for a high yield of supper rice variety. The variety Zhunliangyou 527 got the highest yield, and the yield of the variety Luliangyou106 lay in the second place, and the yield of the variety Qianyou88 was lowest among three varieties. By young seedling transplanting, the growing period was prolonged by six to ten days and their yields were 123.0 - 339.3kg/ha higher, compared to the middle age transplanting.