杂交水稻在我县推广种植已多年,由于其优势强,丰产性能好,对提高粮食单产,加快我县农业生产发展的步伐,起到了显著效果。但长期种植单一组合,有导致种性劣变,优势减退的趋势。为了夺取我县水稻持续高产稳产,则要合理地轮换更新品种,推广杂交稻新组合。因此,我们于1984年早造进行“汕优63”高产栽培试验,结果亩产达1272.6斤。现将试验材料整理如下。 Hybrid rice has been planted in our county for many years. Due to its strong advantages and good yield, it has played a significant role in improving grain yields and accelerating the development of agricultural production in our county. However, long-term cultivation of a single combination has led to the deterioration of species, the advantages of the trend of decline. In order to seize the continuous high and stable rice production in our county, we must take a reasonable rotation of new varieties, promotion of new combinations of hybrid rice. Therefore, we made “Shanyou 63” high-yield cultivation test in 1984 as early as the result of which 1272.6 kg of mu was produced. The test materials are now organized as follows.