砧木是果树生长的基础。砧木的优劣直接影响树体的发育和结果。盐碱地果园因土质粘重,地下水位高,土壤含盐量大,以山定子砧木的苹果树根系浅,黄化病重,易早衰,寿命短。因此,影响了盐碱地苹果的发展。本试验主要通过引种鉴定,筛选出适宜当地条件,耐盐、矮化、结果早产量高,品质好的苹果和梨的砧木。 Rootstock is the basis of fruit tree growth. Rootstock merits directly affect the development and results of the tree. Saline-alkali orchard because of soil sticky, groundwater level is high, soil salinity, mountain roots to Apple rootstock root system shallow, yellow serious illness, premature aging, short life expectancy. Therefore, affecting the development of saline-alkali apple. The test mainly through the introduction of identification, screening suitable local conditions, salt tolerance, dwarfing, the results of high yield, good quality apple and pear rootstocks.