摘要
依托农业水利灌溉水平衡实验设施,在上海市青浦区利用红外线辐射器对稻田生态系统进行了野外增温实验,结果表明：当土壤温度升高1-3℃,且保持现有农业管理方式不变的情景下,水稻的地上生物量下降了17.97%,稻谷产量下降了10.19%;稻田生态系统的水循环加速,水稻耗水量增加了14.4%,产量水平上的水分利用效率下降了24.1%.
In Qingpu district of Shanghai,based on the measurements of Agricultural Water Irrigation Technology Station,we developed a warming experiment on paddy field ecosystem using the infrared heater,meanwhile,kept the soil water table（sometimes aboveground） of warming and control plots at the same level.The results showed that,under the scenario of climate warming（1—3℃ increase in temperature） without changing the current agricultural management,rice growth was suppressed during the whole growth season,the biomass aboveground and yield of rice decreased 17.97% and 10.19%,respectively.The water cycle of paddy field ecosytem accele-rated with the rising in temperature.The cost of water for rice increased 14.4%,the utilization rate of water has a 24.1% of decrease as for the yield of rice.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2010年第3期315-322,共8页
Journal of Fudan University：Natural Science
基金
科技部国际合作计划资助项目(2009DFA92310)
国家科技支撑计划资助项目(2006BAJ05A11)
上海市科技启明星计划资助项目(06QA14005)
上海市科学技术委员会重大资助项目(08ZD1203105)
关键词
稻田生态系统
水量平衡
实验增温
paddy field ecosystem
water balance
experimental warming
