云南目前栽种的小粒种咖啡多年未经选择，优劣混杂，株间差异大，单位面积产量较低。通过单株选择，对其进行选代提纯复壮是很有效的，初选出的株系各方面性状均优于对照，产量较高，株间差异较小。通过进一步试验，可望选出高产稳产的复壮良种提供推广使用。 Currently, the small-seed coffee planted in Yunnan Province has been unselected for many years with mixed advantages and disadvantages. The differences among strains are large and the yield per unit area is relatively low. Through the selection of individual plants, it is very effective to purify and rejuvenate them. All the traits of primary lines are better than the control, the yield is higher, and the difference between the strains is smaller. Through further tests, it is expected to select and promote the use of rejuvenated elite with high and stable yield.