我省柑桔主要分布在四川盆地海拔700米以下的丘陵、低山及部分河滩坝地。土壤多属紫色土,其次是黄壤、潮土等。土壤性质各异,肥力差异大。过去发展柑桔由于未重视对土壤的研究,现在各地的柑桔,都不同程度的反应出由土壤因素引起的树体黄化、花叶、矮小、迟结、产低 Citrus fruits in our province are mainly distributed in hills, low mountains and some floodplain sites below 700 meters above sea level in the Sichuan Basin. Soil mostly purple soil, followed by yellow soil, Chao soil and so on. Different soil properties, fertility differences. In the past, due to the lack of attention to the development of citrus, the citrus nowadays responds to various degrees of tree yellowing, mosaic, dwarfism, late knot and low yield due to soil factors