摘要
湖南省早稻和晚稻都有丰年、欠年之分，但丰年出现的频率远高于欠年．欠年气候特点主要是孕穗至抽穗期低温、阴雨寡照．此期的日均温欠年为２２～２３℃，丰年为２５～２７℃．水稻产量在区试地点间、年际间的变化特点是：同一品种在高产年份存在着低产地点，同一高产地点又有低产年份．
This paper analyses the
effection of climatic factors on rice yield by using the regional test data of Hunan province from
1972 to 1992. The climatic condition in Hunan province is adapted to double rice growing.
There are high-yielding year(HYY ) or low-yielding years(LYY)in both early rice and late rice,
but the probablity in HYY is higher than that in LYY. The climatic characteristics in LYY is low
temperature.rainy and cloudy from booting stage to heading stage. In the period,the daily
mean-temperature is 22～23℃ in LYY and 25～27℃in HYY. Yield variation of any rice
variety shows that there is low-yield-ing sites in HYY and high yielding sites in LYY.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
1995年第4期327-331,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南省科委资助
关键词
生态气候
水稻
品种
产量
区域试验
湖南
ecoclimate
paddy
cultivated varieties
yield
regional tests
Hunan
