1984年我们承担了山东省科委下达的‘杏树早期丰产”课题,经三年的栽培试验,现已初见成效。 一、基本情况 共引进杏15个品种。1984年春在蒙阴县旧寨乡西彭吴村定植1年生半成品苗22亩, 1152株,株行距为4 × 2、 4 × 3和4 × 4n三个密度;在禹家庄子定植1.16亩,113株,株行距3 × In 1984, we undertook the project of “early apricot yield” issued by Shandong Provincial Science and Technology Commission. After three years of cultivation experiments, initial results have been achieved. First, the basic situation introduced a total of apricot 15 varieties. In the spring of 1984 in the old The planting area of ​​1-year-old semi-finished seedlings of 22 hectares and 1,152 plants in Xipeng Village of Zhaixiang was 3 × 4, 4 × 3 and 4 × 4n. The density of 1.16 mu