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由农业部、中国果树研究所组织,山东、山西、河南、甘肃、陕西5省参加的“北方五省200万亩苹果幼树优质丰产三级配套技术开发研究”项目第一次协作会议于1990年10月10日～13日在甘肃省酒泉市召开。 会议指出,全国苹果栽植面积已达2535万亩,总产450万吨;“七五”期间栽植的红富
The first collaborative meeting of “Research and Development of Three-grade Supporting Technologies of 2000000 Mu of Young Saplings of Apple Trees in Five Northern Provinces” organized by the Ministry of Agriculture and China Fruit Research Institute and participated in by Shandong, Shanxi, Henan, Gansu and Shaanxi provinces in 1990 October 10 to 13 held in Jiuquan City, Gansu Province. The meeting pointed out that the planting area of apple in the country has reached 25.35 million mu and the total output has reached 4.5 million tons. The red wealth planted during the “Seventh Five-Year Plan”