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１９９２年春，在卢龙县卢大岭果园对１９８７年１０月定植，行株距为５ｍ×４ｍ的国光、金冠、胜利低产值苹果园，高接为长富２、青富１３高产值苹果园。高接园为４．２ｈｍ２（公顷）、２１００株，其中含高接树３．１５ｈｍ２、１５７５株和未高接授粉树１．０５ｈｍ２、５２５株，高接树与授粉树的比例为３∶１；对照园为１．４ｈｍ２、７００株。在良好的综合管理条件下，１９９２—１９９６年的５年中，每公顷累计产量高接园为５４４７２．８ｋｇ，对照园为８６９７５．２ｋｇ；每公顷累计产值高接园为１１４３３６．７元，对照园为９９３６２．９元。虽然高接园比对照园５年每公顷累计产量降低了３７．４％，但累计产值却增加了１５．１％。文内总结了其高接增值的主要技术。
In the spring of 1992, Lugolling Orchard in Lulong County set up an apple orchard of Guoguang, Golden Delicious and Victory low-output with a planting distance of 5m × 4m in October 1987 and a high-yield apple orchard of Changfu-2 and Qingfu-13. High-park is 4.2hm2 (hectare) and 2,100 plants, including 3.15hm2,1575 high-yielding trees and 1.025hm2,525 non-pollination pollination trees. The ratio of high-yielding trees to pollination trees is 3: 1 ; Control garden is 1.4hm2,700 strains. Under the condition of sound general management, in the five years from 1992 to 1996, the cumulative yield per hectare was 54,472.8 kg in the high-yielding garden and 86,975.2 kg in the control garden; the high-yielding garden per hectare was 114,326.7 yuan, Park is 99,362.9 yuan. Although the cumulative yield per hectare decreased by 37.4% in the five-year high-yielding garden compared with the control, the cumulative output increased by 15.1%. The text summarizes the main technology of high value-added.