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晚稻是我省稻作区三季粮食作物中面积最大的一季作物,而灌浆期是决定产量和千粒重关键时期。据有关文献研究表明:水稻米粒中的干物质,约有三分之一是由出穗前贮藏在茎鞘中运转供应,约有三分之二是由出穗后光合作用产生供给的。影响粒重的因素是复杂的,但是在生产水平基本相似情况下,气象条件的优劣对晚稻干物质的运转速率和籽粒干物质积累是起着主导因素。根据上述论述和笔者多年实际试验、对晚稻灌浆期气象条件关系作一初浅探讨.
Late rice is the largest season crop in the three season rice crops in the rice growing region in our province, while the filling stage is the critical period for determining the yield and grain weight. According to the literature research shows that: about one-third of the dry matter in rice grains stored in the stem sheath in the supply and operation, about two-thirds of the dry matter produced by the photosynthesis supply. The factors influencing the grain weight are complex, but under similar production levels, the meteorological conditions play a dominant role in the running rate of dry matter and the accumulation of dry matter in rice plants. According to the above discussion and the author many years of practical experiments, the relationship between the meteorological conditions of late rice during grain filling period for a preliminary discussion.