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分析了中籼迟熟杂交水稻在干旱高温年份开花结实与气象条件的关系： （１）８ 月上旬开花期旬平均气温２４．５～２６．５℃产量较高， 稳产丰产性较好； （２）８ 月上旬开花期日照较多， 降水较少， 湿度适宜， 有利于提高结实率； （３）开花后３０ ｄ 平均气温２３．１～２５．３℃、平均最高气温＜３１．９℃、日照１５５．３～２１３．８ ｈ 有利于灌浆结实， 平均气温＞ ２６．９℃、平均最高气温＞ ３３℃、日照＜ １５１．２ ｈ 秕粒率增加， 粒重下降。由此提出促进适期开花结实的高产技术措施。
The relationship between the flowering and fruiting of middle late indica hybrid maturity rice and meteorological conditions in the years of drought and high temperature was analyzed. (1) The average temperature of 24.5 ~ 26.5 ℃ during the flowering period in early August was higher, 2) In early August, the flowering stage had more sunshine, less precipitation and more suitable humidity, which could improve the seed setting rate. (3) The mean temperature of 30 days after flowering was 23.1-25.3 ℃ and the average maximum temperature was <31.9 ℃ , Sunshine 155.3 ~ 213.8 h is conducive to filling and solidification, the average temperature> 26.9 ℃, the average maximum temperature> 33 ℃, sunshine <151.2 h 秕 grain rate increased, grain weight decreased. Thus proposed to promote proper flowering and strong high-yielding technical measures.