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几年来,我县杂交水稻种植面积的扩大,对粮食增产起到很大作用。但是,由于繁殖制种的产量很低,大量种子靠外调。如1977、1978年县农科所早稻繁殖平均亩产都在50斤以下,晚稻制种全县平均也不超过65斤。影响繁殖制种产量的因素很多,幼穗分化和抽穗开花期受到不利天气影响也是造成低产的主要原因之一。
Over the past few years, the expansion of acreage of hybrid rice in our county has played a significant role in increasing grain output. However, due to the low yield of seed production, large numbers of seeds are reassigned. For example, in 1977 and 1978, the average yield per mu of early rice in county and county farms was less than 50 kg, and the average yield of late rice varieties in the county was no more than 65 kg. There are many factors affecting the yield of breeding seed production, panicle differentiation and heading and flowering affected by adverse weather is also one of the main causes of low yield.