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为了探讨山楂树对硼素营养的敏感性,我们在山楂树与苹果树混栽的园块中(对硼敏感的苹果树已表现明显的缺硼症状),进行了山楂树施硼试验,观察山楂施硼的效果。试验于1983～1984年在开原县莲花乡保安
In order to investigate the sensitivity of hawthorn to boron nutrition, we conducted the hawthorn boron application experiment in the mixed block of hawthorn and apple trees (the boron-sensitive apple trees had obvious boron deficiency symptoms) Boron effect. The experiment was conducted in Lotus Township, Kaiyuan County from 1983 to 1984