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信阳地区杂交水稻种植面积,历年在10万亩左右波动。近两年,发展迅速。1988年种植面积43.14万亩,其中汕优63面积占75%,平均亩产539.5公斤。1989年落实面积为105万亩,预计1990年将达到200万亩。为了发挥杂交水稻的增产潜力,促进我区杂交水稻生产的发展,1987—1988年,我们对汕优63众多数量性状间的关系进行了探讨。一、基本认识与研究方法《中国稻作学》指出,“在水稻产量构成因素中,千粒重比较稳定。产量的高低主要决定于每亩穗数、每穗总粒数和结实率的乘
Xinyang area hybrid rice acreage over the years fluctuated around 10 acres. The past two years, the rapid development. In 1988, planting area 431400 mus, of which Shanyou 63 area accounted for 75%, average yield 539.5 kilograms. The implementation area in 1989 was 1.05 million mu and it is estimated that it will reach 200 million mu in 1990. In order to make full use of the yield potential of hybrid rice and to promote the development of hybrid rice production in our district, we discussed the relationship between the numerous quantitative characters in Shanyou 63 from 1987 to 1988. First, the basic understanding and research methods “China rice science” pointed out that "in the composition of rice yield factors, 1000-grain weight is relatively stable.Production level is mainly determined by the number of spike per acre, the total grain number per panicle and the rate of multiplication