摘要
气候变化引起作物气候适宜度,为了明确1951—2010年南方晚稻气候适宜度的时空演变特征,研究依据南方稻区196个站点的1951—2010年逐日气象数据和作物生育期数据,采用现有的气候适宜度评估模型,分1951—1980年、1981—2010年2个时段对南方稻区晚稻生育期内气候适宜度的时空演变特征进行分析。结果表明,南方稻区晚稻气候适宜度呈下降趋势,且1981年以后下降趋势较为明显;其中,研究区内晚稻的温度适宜度总体呈增加趋势,而降水适宜度则呈先增加后降低的趋势,光照适宜度则总体呈显著的下降趋势。晚稻气候适宜度、光照适宜度及温度适宜度皆呈由东向西逐渐递减空间分布特征,降水适宜度空间分布特征不明显。从生育期来看,晚稻抽穗开花期的温度、降水适宜度均较低,为此,晚稻抽穗开花期应注意温度与水分的管理。文章的结果可为南方晚稻的田间管理提供理论参考。
Climate changes call forth climatic suitability. Based on previous work of climatic suitability model,this study analyzed the spacial-temporal characteristics of climatic suitability for late rice all through from 1951 to 1980 and 1981 to 2010 by using the daily weather and phenological phase data sets from 195 agromeotorological stations in Southern China.The results showed that there was a decreasing trend of the climate suitability for late rice in southern China during the period from 1951 to 2010,and a significant decreasing trend from 1981 to 2010.The suitability of temperature during the late rice growth period showed an increasing trend,while the suitability of precipitation increased from 1951 to 1980,and decreased from 1981 to 2010,but that of solar radation showed a decreasing trend during the growth period of late rice.The suitability of temperature,as well as that of solar radiation declined from east to west.In view of climate variables suitability during different development periods of late rice,as the same as temperature,the suitability of precipitation from heading to blooming was lower than that in other periods.Therefore,the farmer should pay close attention to mositure and temperature management from the heading to the blooming stages for late rice.The results of this study provides references for the farmer and governor in growth of late rice.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2016年第4期792-804,共13页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金(31560337)
公益性行业(气象)科研专项(GYHY201106020)
江西农业大学博士科研启动基金(9232304660)
江西省气象局水稻气象研究创新团队项目~~
关键词
南方晚稻
气候适宜度
时空分布
变化趋势
late rice
climatic suitability
spacial-temporal characteristics
change tendency
