杂交水稻具有较好的生产性能,对促进粮食生产起重要作用。然而,杂交稻在我省的发展是不平衡的,在中低产地区种植面积较多,而在高产田类推广的步子却较慢。究竟杂交水稻在高产地区的增产效果以及相应的栽培技术如何,我们在这方面进行了一些探索。顺德县伦教公社地处珠江三角洲河网地区,有较好的生态系统及水肥条件,水稻年亩产1500斤左右。七十年代先后早稻以“科十”、“桂朝”为当家种。终因“科十”太迟熟,“桂朝”抗性未过关,故逐步为杂交稻所取代。伦教公社自1975年种植杂交稻以来,每年早造都获得好收成。1982年早造全社种植“汕优2号”9391亩,占早稻面积72％,平均亩产920斤,其中千斤田约2000亩,最高亩产1318.7斤。是历年来种植杂交稻面积最大、产 Hybrid rice has good performance and plays an important role in promoting grain production. However, the development of hybrid rice in our province is not balanced, with more acreage in middle and low yielding areas, and slower in high yielding fields. After all, the yield-increasing effect of hybrid rice in high-yielding areas and the corresponding cultivation techniques, we have made some explorations in this respect. Shunde County Lunjiao commune is located in the Pearl River Delta River Network area, a better ecological system and water and fertilizer conditions, annual output of 1,500 kg rice. In the seventies, early and late rice was classified as “Family 10” and “Gui and Chao”. Due to the “Section X” too late, “Gui” resistance did not pass, it is gradually replaced by hybrid rice. Lunjiao commune Since hybrid rice was planted in 1975, it has achieved a good harvest every year. As early as 1982, the whole plant was planted with 9391 mu of “Shanyou 2”, accounting for 72% of the area of ​​early rice with an average yield of 920 kg per mu, of which about 2,000 mu was the maximal yield and 1318.7 kg per mu. Over the years is the largest hybrid rice cultivation, production