Abstract: Based on the ground meteorological data from 1981 to 2017 and the statistical output data of citrus（Citrus reticulata Blanco.）,the relationship between citrus output and meteorological factors was discussed by linear climate trend rate and correlation coefficient analysis. The results show that the planting area and total yield of citrus and year average yield in Nanfeng County in the past 37 years revealed an increasing trend. Through correlation analysis, mean annual temperatures,annual accumulated temperature were significantly positively correlated with citrus year average yield, however the annual precipitation,rainy days,sunshine duration were uncorrelated or un-significant. Average maximum air temperature in late March and June,in middle July and Novembe,in front July and August and November;average minimum air temperature in middle June,annual precipitation in middle November were significantly positively correlated with citrus of year average yield; however the sunshine in front June were significantly negatively correlated with it.

Key words: Citrus（Citrus reticulata Blanco.） yield, air temperature, precipitation, sunshine