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杂交水稻是我国水稻科研工作的重大突破,是水稻生产上继单季改双季、高秆改矮秆之后的又一重大改革。它具有生长旺盛、适应性广、抗逆性强、米质好、增产潜力大等特性,据试验,比普通品种一般增产2～3成。为了鉴定杂交水稻的适应性,加速在我省推广,1976年在汉中、安康、西安、宝鸡等4个地(市)、8个县15个单位试种,共有南优3号、南优2号和汕优2号等15个杂交组合。
Hybrid rice is a major breakthrough in China’s rice scientific research, is another major reform rice production following the single season change double season, tall stalks changed dwarf. It has the characteristics of strong growth, wide adaptability, strong resistance, good quality of rice and great potential for increasing yield. According to the test, the yield is generally 2-3% higher than that of ordinary varieties. In order to identify the adaptability of hybrid rice and speed up the promotion in our province, in 1976 in Ankang, Xi’an, Baoji and other four cities (prefectures), eight counties in 15 units of trial planting, a total of Nanyou 3, Nanyou 2 Number and Shanyou 2 15 hybrid combinations.