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目前生产上推广的杂交水稻,其结实率通常低于常规稻品种。据全国杂交水稻气象科研协作组对12个试验点的汕优6号及其恢复系IR26的平均值进行分析,发现6种温度(18℃、18.1—20.0℃、20.1—22.0℃、22.1-24.0℃、24.1—26.0℃、26.1—28.8℃)条件下抽穗扬花的汕优6号结实率均低于
At present, the popularization of hybrid rice production, the seed setting rate is usually lower than conventional rice varieties. According to the National Meteorological Research Coordination Team of Hybrid Rice, the average values of Shanyou 6 and its restorer line IR26 at 12 experimental sites were analyzed and found that 6 kinds of temperature (18 ℃, 18.1-20.0 ℃, 20.1-22.0 ℃, 22.1-24.0 ℃, 24.1-26.0 ℃, 26.1-28.8 ℃), the seed setting rate of Shanyou 6 was lower than