我区苹果生产过去采用乔砧稀植,早期产量低、收入少,影响发展。七十年代中期从郑州、青岛、大安等科研部门引进苹果矮化砧木,目的是通过矮砧途径,总结苹果早产、高产、优质的结验。矮砧苹果密植园于1978年春在临沂县九曲公社彭于埠大队建立。密植园栽在沂河东岸平原黄壤土,土层 My area apple production in the past by using Qiao ani thin planting, early low yield, low income, affect development. The mid-1970s from Zhengzhou, Qingdao, Daan and other research departments to introduce apple dwarf rootstocks, the purpose is through the dwarf anvil approach, summarize the apple premature birth, high yield, high-quality test. Dwarf an apple close planting plant in the spring of 1978 in Linyi County Jiuqu commune Peng Yu port brigade established. Close planting plant planted in the eastern coast of Yihe yellow loam soil, soil