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目前全国各地山楂生产发展很快,出现了不少幼树密植丰产典型。为了促使山楂幼树早结果,提高单位面积产量,我们对山楂栽植密度与产量的关系;山
At present, hawthorn production throughout the country developed rapidly, there have been many young trees dense planting high yield typical. In order to promote the early result of hawthorn saplings and improve yield per unit area, we have the relationship between planting density and yield of hawthorn;