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本文研究无性系幼树树皮及一年生苗叶部的乳管系与产量早期预测的关系。观察到4龄幼树树皮乳管列、个数与其成龄芽接树第一割年的产量都达到极显著相关(r=0.6324~(**)和r=0.7956~(**));侧脉乳管数与其成龄芽接树头5割年平均产量呈显著相关(r=0.4160~*;小叶柄和大叶柄孔管数与其成龄芽接树头5割年平均产量都呈极显著相关(r=0.4671~(**)和r=0.5971~(**));主脉乳管数量与其成龄芽接树头5割年平均产量没有相关。因此,4龄幼树树皮乳管列,个数及一年生苗的侧脉、小叶柄和大叶柄乳管数量可以作为产量早期预测的指标。
In this paper, we studied the relationship between the milk tube system and early prediction of yield in the young tree bark and annual leaf of clones. It was observed that the number of birch birch barks of 4 - year - old saplings was significantly correlated with the yield of the first cut of Juglans nigra (r = 0.6324 ~ (**) and r = 0.7956 ~ (**)); The number of lateral venous milk was significantly correlated with the average annual yield of 5-year-old adult budding tree (r = 0.4160 ~ *); the number of micropyle and petiole had a significant correlation with the annual average yield of 5-year-old budding tree (r = 0.4671 ~ (**) and r = 0.5971 ~ (**)). The number of the main mammary ducts was not related to the average annual yield of five-year-old budding tree. , The number of lateral veins, the number of petiole and the petiole of annual perennial can be used as the indicators of early yield prediction.