树盘“打洞”填肥改造丘陵山地柑桔小老树笔者在丘陵地柑桔栽培中，发现不少小老树是土壤改造不得法造成的。因大多数丘陵山地熟上层浅，中下层石头多，一些果农定植柑桔时，挖几锄就栽下，栽时不施有机肥或施得很少，以后挖坑施肥时不见根就施下，造成柑桔树须根极少，只... Tree plate “hole” to fill the hills to reclaim the small orange trees I was cultivated in the hilly citrus, found that many small trees are caused by soil modification law. Because most of the hilly mountain cooked shallow, middle and lower layers of stone, some fruit growers citrus, dug a few hoes planted, planted without organic fertilizer or applied very little, after digging fertilization without root application , Resulting in very few citrus tree whiskers, only ...