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以目前四川省水稻生产上推广的10个杂交中稻组合为材料,研究了冬水田机插秧适宜的品种特性与高产栽培技术。结果表明,机插秧因籽粒灌浆期比手插秧长,全生育期比手插平均长1.9 d;机插秧平均最高苗数、有效穗数、结实率均比手插秧高,但每穗粒数和千粒重要比手插秧低,最终产量比手插秧高12.3 kg/667 m~2,增产2.54%。品种的最高苗数与机插秧增产程度呈显著负相关,机插秧以选择分蘖力中上等品种为宜,辐优6688、D香707、蓉稻415、川农优498、协优027、川香317可作为机插秧的主推品种。机插秧高产栽培技术要点:播种量80 g/盘;每667 m~2施纯氮6~9 kg,采用传统的“重底早追”的施氮方式;于4.5叶期按29.7 cm×19.8 cm规格移栽。
Based on the 10 hybrid mid-rice combinations that are currently being popularized in rice production in Sichuan Province, the suitable varieties and high-yielding cultivation techniques of winter paddy field rice transplanting were studied. The results showed that the average seedling transplanting seedling stage than the hand-held transplanting seedlings, the growth period than the average length of 1.9 d; seedlings transplanted the highest average number of seedlings, the effective panicle number, seed setting rate higher than the hand-transplanted seedlings, but the grains per spike Thousand grain weight is significantly lower than that of hand transplanted rice, and the final yield is 12.3 kg / 667 m ~ 2 higher than that of hand transplanted rice plant, increasing 2.54%. The highest seedling number of varieties was significantly and negatively correlated with the degree of increase of seedling transplanting, and the best seedling selection ability was Yakou 6688, D Xiang 707, Rongdao 415, Chuanongyou 498, Xieyou 027, Sichuan Fragrant 317 can be used as the main push seedlings varieties. The main points of high-yield cultivation techniques of machine-transplanting seedlings are as follows: sowing rate is 80 g / pan; applying nitrogenous fertilizer 6 ~ 9 kg per 667 m ~ 2, using conventional "heavy- × 19.8 cm Specifications transplanting.