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汕优6号是我省当前应用最广的杂交水稻组合,具有根系发达、长势旺盛、穗大粒多、高产优质、抗性较好等优点,但生育期稍长,作连晚栽培在一些地区易遭低温冷害。为此,亟须明确汕优6号对后期低温的耐受能力,以及进行安全齐穗、结实的温度指标鉴定,为高产稳产、合理安排茬口提供依据。从这一要求出发,我们于1978年在临安县颊口公社桥西大队进行了试验。
Shanyou 6 is the most widely used hybrid rice combination in our province. It has the advantages of developed roots, vigorous growth, large spikelets, high yield and good quality, good resistance and other advantages. However, it has a slightly longer growth period and even late cultivation in some areas Vulnerable to cold damage. Therefore, it is urgent to clarify the tolerability of Shanyou 6 to low temperature in the later stage, as well as the identification of safe and full heading and strong temperature index, which provides the basis for high yield and stable yield and rational arrangement of stubble. Starting from this requirement, we conducted a test in Qiaoxi Brigade of Gongcaikou Commune in Lin’an County in 1978.