林家贵

摘 要 ‘博Ⅱ优818是海南省农业科学院粮食作物研究所近年来用‘博Ⅱ-Ax海恢818组配育成的又一个弱感光料型的优质高产杂交水稻新组合。2013年引入琼西北部少数黎苗族稻作区作多点试种，表现出株型适中、叶片适中、后期熟色好、适应性广、高产稳产、米质优等特点。大面积种植每公顷产7 500.0～7 608.0 kg。栽培技术：晚造以7月上中旬播种，播种前做好种子消毒，播后培育壮秧，适时移栽，抛栽27.0～28.6万株/hm2，手插秧以30～35万兜为宜，插植规格18 cm×20 cm；移栽时重施基肥，插后5～7 d结合除草追施化肥；科学控水；注意防治白叶枯病、纹枯病，细菌性条斑病、稻飞虱、稻纵卷叶螟，三化螟等病虫害。

关键词 博Ⅱ优818 ；杂交水稻 ；农艺性状 ；高产

中图分类号 S511 文献标识码 A Doi：10.12008/j.issn.1009-2196.2017.06.006

Performance and High-Yielding Cultivation Techniques of

High Quality Rice Hybrid ‘Bo II 818 in the Northwest of Hainan

LIN Jiagui

（Nongxin Institute of Scientific Research of Changjiang Li Minority Autonomous County，

Changjiang， Hainan 572700）

Abstract Paddy rice variety‘BoII 818 is a high-yielding rice hybrid of a new combination between ‘BoII-Ax and Haihui 818， and it is weak in photosensitivity. This hybrid has been cultivated by the Hainan Academy of Agricultural Sciences in Hainan in recent years. In 2013， a multi-point trial for this hybrid was conducted in the northwest of Hainan. The hybrid was moderate in plant type， adequate in leaf size， and good in rice color at the late maturity stage. It yielded high and stable with wide adaptability and high rice quality. The hybrid yielded 7 500.0～7 608.0 kg/ ha on a large scale. For late cropping it is sown in mid July. The seeds should be disinfected before sowing， and robust seedlings should be raised after seed are sown， and transplanted at an adequate time. Seedlings were transplanted by throwing at a rate of 270～286 thousand/ha and by hand at 300～350 thousand /ha at a spacing of 18 cm × 20 cm. Basal manure should be applied at transplanting and chemical fertilizer be dressed in combination of weeding 5～7 days after transplanting. Water for irrigation should be controlled scientifically. The main diseases and pests to be controlled include white leaf blight， sheath blight， bacterial stripe disease， rice plant hopper， paddy leaf roller borer， yellow rice borer， among others.

Keywords BoII 818 ； hybrid rice ； agronomic traits ； high yield

海南西北地區是黎苗少数民族聚散居地，地处热带，高温高湿，季风性气候非常显著，地形以丘陵山地为主，每年5～10月之间是雨水季节，台风、暴雨频繁，严重影响晚造水稻生产。水稻生产是琼西北地区少数黎苗族的生活来源主要收入组成部分，由于管理粗放，致使病、虫、草、鼠、螺等危害比较严重，粮食产量低，不能自给自足。指导该地区选种优质高产的新杂交水稻品种，改变黎苗少数民族地区粗耕粗管，缩小黎苗族、汉族栽培管理差距已成为本地农技人员的职责。该地区晚造平均水稻每公顷产量约3 750 kg[1]，在受产业结构调整的影响下，水稻生产呈递减趋势[2]。生产上迫切需要引种高产优质，抗性好，适应性广的杂交水稻新品种。博Ⅱ优818是海南省农业科学院粮食作物研究所近年来用博Ⅱ-Ax海恢818组配育成的高产优质弱感光型三系杂交水稻新组合。……