好苗木如何甄别

How to discriminate good seedlings

1. 树干通直

1. trunk straight

① 看树皮是否有缺损。缺损部分的深度大小和位置，在主干上超过树干周长的1/3，且深度已经超过树的韧皮部，就会对植株水肥输送产生较大影响，如果出现树皮环剥的情况便坚决不能使用。

See if there is any defect in the bark. The depth and position of the defect parts exceed 1/3 of the circumference of the trunk, and the depth of the defect parts exceed the phloem of the tree, which will have a greater impact on the water and fertilizer transport of the plant. If the bark ring occurs, it can not be used.

② 看树皮是否干枯。可用手指掐开树表皮看树皮是否干枯，水分是否充足，水分充足的植株会在破损时流出液体。

2. See if the bark is dry. Fingers can be used to pinch the skin of the tree to see if the bark is dry, water is sufficient, water-rich plants will flow out of the liquid when damaged.

2. 枝叶健康

2. healthy branches and leaves

从植物的生理状态来说主要看植株是否健壮，有无病虫害。首先观看植株枝叶情况：

Judging from the physiological state of plants, it depends on whether plants are strong or not. First look at the foliage.

① 是否发叶，叶片的颜色是否符合品种特点（彩叶品种），如朴树，黄连木，香樟等新春发叶为嫩绿色，红枫，鸡爪槭，茶条槭发新叶为红色。

(1) Whether the leaves are hairy or not, whether the color of the leaves conforms to the characteristics of the varieties (color leaves varieties), such as Pu Shu, Coptis chinensis, Cinnamomum camphora and other spring hairy leaves are tender green, red maple, chicken feet maple, tea strip Maple hairy leaves are red.

② 查看叶片是否出现干枯情况，以及叶片的大小，偏小说明未完全适应当地气候或者移植时间过短，健康的叶面具有一定反射的亮泽度，也可以作为参考。

(2) Check whether the leaves appear dry and dry, and the size of the leaves, the novel is not fully adapted to the local climate or transplantation time is too short, healthy leaf mask has a certain reflective gloss, can also be used as a reference.

3. 根系发育良好

3. the root system develops well.