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我县杂交水稻从1974年开始试验至1978年全面推广,迄今已经历13年时间。80年代以来,每年早晚两造种植面积维持30—40万亩。尤以早造推广面积最大,占四成至五成,有些区镇占七成,从而全县粮食获得较大幅度增产。1961—1977年间,全县水稻种植面积在160万亩左右,全年稻谷产量徘徊在2.5—3亿公斤,年亩产340—360公斤之间。1978年以后,通过调整农业生产布局,水稻种植面积虽下降到145—130万亩左右,但由于大面积推广种植杂交水稻,全县稻谷年总产上升到3.85—4.05亿公斤,年亩产上升到540—590公斤。在我县水稻裁培史中,杂交水稻亩产已突破651公斤的高产纪录。1980年—1985年,全县平均杂交水
I County hybrid rice from 1974 to test the full promotion in 1978, so far has gone through 13 years. Since the 1980s, the planting area has been maintained at 30-40 mu per day both morning and evening. Especially in the early promotion of the largest area, accounting for 40% to 50%, and some districts and towns account for 70%, resulting in more substantial grain production throughout the county. Between 1961 and 1977, the county’s rice acreage was about 1.6 million mu, annual paddy production hovered between 253 and 300 million kilograms, and annual mu production was between 340 and 360 kilograms. After 1978, though the area under rice production has been reduced to 145-130 mu, though the area under rice production has been reduced to about 145-130 mu, the total annual output of paddy in the whole county has risen to 385-405 million kg due to the large-scale popularization and cultivation of hybrid rice. To 540-590 kg. In the history of rice cropping in our county, the yield of hybrid rice has exceeded the record high yield of 651 kg. 1980 - 1985, the county average hybrid water