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日本晴水稻系1975年引入济宁地区,经五年来的试种、示范、推广,种植面积逐年扩大,1980年全区种植面积已达15.7万亩,成为沿湖地区的主要配套品种之一.实践证明,该品种具有早熟、优质、高产、稳产等优点,1979年在水稻抽穗扬花期遇上低温,全区70万亩晚熟品种平均减产18.6%,而10万亩日本晴由于早熟避过低温而增产10%左右,并连年出现亩产超千斤的高产地块,这
Japonica Rice was introduced into Jining in 1975. After five years of trial planting, demonstration and popularization, the planting area expanded year by year. In 1980, the planting area in the whole area reached 157,000 mu, making it one of the main supporting varieties along the lake. , The variety has the advantages of early maturity, high quality, high yield and stable yield. In 1979, when the heading rate of rice reached low temperature, the average yield of 700,000 mu of late-maturing varieties in the whole area was reduced by 18.6% on average, while the yield of 100,000 mu of Nipponbare increased due to precocious puberty % Or so, and successive years appear super-kilograms of high yield plots, which