按照果树上山下滩不与粮棉争地的方针,五莲县的苹果树大部分栽植在山岭薄地。但是由于土层薄(一般多在20～30厘米)造成树势衰弱、树冠小,普遍出现隔年结果及裂果等现象发生,影响了果树生产和对“以粮为纲,全面发展”方针的贯 In accordance with the fruit trees up and down the beach does not compete with grain and cotton policy, most of the apple trees in Wulian County are planted in thin mountain. However, due to the thin soil layer (generally more than 20-30 cm), the phenomenon of weak trees, small crowns, widespread second-year results and cracked fruit have affected the production of fruit trees and affected the policy of “taking grain as the key link and all-round development”