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无霜期
nonfrost period
- 特别是所选水稻品种的生育期一定要小于种稻地点的无霜期。
Particularly the growth duration of rice variety selected has to be little less than the frost-free period of the rice growing site. - 多年大于或等于10℃以上的年积温5600℃,无霜期长达306—328天。
The average annual temperature is about 17.1℃ with average 6℃ of the coldest day (JAN) and average 27.8℃ of hottest day (Jul). - 日照时间长，昼夜温差大，无霜期长，年太阳能辐射量大，对农作物生长十分有利。
The sunshine duration is long, the temperature difference is big, the frost-free period is long, and the annual solar radiation amount is much, which is good for the growth of crops.
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