柑桔生长期温度指标研究及应用

利用1971—2008年柑桔单产统计资料,采用滑动平均的方法,计算每年柑桔气象产量,并以此划分丰、平、欠气候年景。以2001—2008年田间观测数据和生产实际为基础,确定柑桔平均生长发育期,分析柑桔生长与日平均温度、日最高温度、日最低温度之间的关系。通过研究得出柑桔从播种到成熟的最适温度上限、最适温度下限、最适温度上限极值、最适温度下限极值、受害温度、死亡温度,在此基础上设计了累积低温影响指数,建立了柑桔每个生育期的累积低温影响指数区间,设计开发了柑桔低温灾害预警分析系统,对柑桔生长各时期低温灾害进行动态监测和预警。

Research and Applications of temperature indicators for Citrus in growing season

Based on citrus yield data from 1971-2008,the meteorological yield of citrus was calculated by use of smooth average methed and furthermore the climatic harvest patterns were classified into high-yielding year,mean-yielding year,and low-yielding years,By using the field observation data from 2001 to 2008,the mean growth period,and the relationship between daily mean temperature,daily maximum temperature,daily minimum temperature and growth of citrus was analyzed,and the temperature indexes of growth period of citrus were determined,which include the upper limit of optimum temperatures,extreme value of lower limit lowest temperatures,the harmful temperature,the death temperatures of the development period from sowing to maturation of citrus.on this basis,the Cumulative index of low-temperature impact was designed,the Cumulative index ranges of low-temperature impact of each season were established,Design and development of the citrus low-temperature analysis of disaster early warning system,Low-temperature dynamic monitoring and early warning of disasters was conducted.