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应用壕沟法研究了利用矮化中间砧栽培不同定植方式 (中间砧全部露出地面与中间砧 1 /2露出地面 2种 )对苹果树根群分布、根系的鲜重、干重及枝、干、叶、果的鲜重、干重等的影响。结果表明 ,2种不同定植方式根群 90 %以上分布在 0～ 40 cm土层中 ,其中 2 0～ 40 cm土层中分布最为集中 ,分别占总根量的 5 9%和 5 5 %。水平分布以主干为中心 ,主要集中在中间砧露出区株间 60 cm以内 ,中间砧 1 /2露出区株间 80 cm以内 ,行间无明显差异。根系的鲜重和干重中间砧 1 /2露出区是中间砧露出区的 1 .34倍和 1 .78倍 ,枝、干、叶、果实的干重中间砧1 /2露出区是中间砧露出区的 2 .4倍、2 .3倍和 2倍 ,果实产量二者相比 ,中间砧 1 /2露出区较中间砧露出区提高了 2 8.5 %。
Trench method was used to study the root distribution, root fresh weight, dry weight and branches, stems and stems of apple trees by using dwarfing intermediate anvils to cultivate different planting modes (all of the middle anvil exposing the ground and 1/2 of the middle anvil exposing the ground) Leaf, fruit fresh weight, dry weight and other effects. The results showed that more than 90% of the two colonization groups were distributed in 0-40 cm soil layer, of which 20-40 cm soil layer was most concentrated, accounting for 59% and 55% of the total root volume respectively. The horizontal distribution centered on the trunk, which was mainly located within 60 cm of the exposed area of the middle anvil, within 80 cm of the exposed area of the middle anvil 1/2. There was no significant difference between the rows. Root fresh weight and dry weight of the anvil 1/2 exposed area is 1.34 times and 1.78 times the exposed area of the middle anvil, dry, leaf, fruit dry weight intermediate anvil 1/2 exposed area is the middle anvil The exposed area of 1/2 of the intermediate anvil was 2 8.5% more exposed than that of the intermediate anvil when compared with the 2.4 and 2.3 times and 2 times of the exposed area.