关键词: 冬水田, 杂交中稻, 机插秧, 高产栽培技术

Abstract: The varieties characteristics of mid-season hybrid rice and the high yield cultivation techniques were studied by machine transplanting（MT） and artificial transplanting（AT） system in winter water-logged field. The results indicated that the whole growth period of MT was increased by 1.9 days compared to AT, because grain fulling were prolonged. The average numbers of maximum seedings, productive panicles and seed setting rate of MT were higher than that of AT, respectively, but the grains per panicle and 1 000-grain weight were lower than that of AT, the grain yield of MT increased by 2.54%. There were significant negative correlation between maximum seedings and the increasing amount of grain yield of MT. Suitable varieties for MT were Fuyou 668, D xiang 707, Rongdao 415, Chuangnongyou 498, Xieyou 027 and Chuanxiangyou 317, and the high yield cultivation techniques of MT were seeding rate with 80 g/plate, 6~9 kg/667 m2 of nitrogen, according to the traditional methods of nitrogen application （base fertilizer∶tillers fertilizer = 7∶3）, transplanting size by 29.7 cm × 19.8 cm at 4.5 leaves stage.

Key words: winter water-logged field, mid-season hybrid rice, machine transplanting, high yield cultivation techniques