苗木主要分为乔木、灌木、地被以及草坪等，乔木是指树身高大的树木，由根部发生独立的主干，树干和树冠有明显区分。有一个直立主干、且高达6米以上的木本植物称为乔木。与低矮的灌木相对应，通常见到的高大树木都是乔木，如木棉、松树、玉兰、白桦等。乔木按冬季或旱季落叶与否又分为落叶乔木和常绿乔木。 乔木主要从它的花、叶、枝条、形状等几个方面来区分，质量主要是看它的叶子是否鲜亮，树形如何，有没有伤枝、断枝、病虫害枝、土球的大小是否合理，土球的土壤是否新鲜、潮湿，是否是人工造的假土球等立面来判断。 　　灌木是没有明显主干的木本植物，植株一般比较矮小，不会超过6米，从近地面的地方就开始丛生出横生的枝干。都是多年生。一般为阔叶植物，也有一些针叶植物是灌木，如刺柏。如果越冬时地面部分枯死，但根部仍然存活，第二年继续萌生新枝，则称为“半灌木”。如一些蒿类植物，也是多年生木本植物，但冬季枯死。有的耐阴灌木可以生长在乔木下面，有的地区由于各种气候条件影响（如多风、干旱等），灌木是地面植被的主体，形成灌木林。沿海的红树林也是一种灌木林。 灌木主要从高度、冠幅、叶片色泽、、病虫害、土球、产地等方面来判断。 Seedlings were mainly divided into trees, shrubs, and grass, tree refers to the tree tall trees, by the roots occur independent of the trunk, trunk and canopy has obvious distinguish. Have a straight trunk, and up to 6 meters of woody plants, called a tree. Correspond to low shrubs, usually see the tall trees are trees, such as kapok, pine, yulan, birch, etc. Is divided into tree leaves in winter, or dry season or not deciduous trees and evergreen trees. Tree mainly from its flowers, leaves, branches, to distinguish between several aspects, such as shape, the quality is mainly to see if it leaves bright, the tree, have hurt branches, production, plant diseases and insect pests, soil ball is reasonable, the size of the soil is fresh, moist soil ball, ball is made of artificial false soil such as facade to judge. Bush was no obvious backbone of woody plants, plant is compared commonly small, no more than 6 meters, out of the place close to the ground began to cluster horizontal branches. Are perennial. Generally for broadleaf plants, there are also some conifers are shrubs, such as juniper. If winter when the ground part of the dead, but the root is still alive, in the second year continue to initiation sections, it is called a "subshrub". As some artemisia plants and perennial woody plants, but die in winter. Resistance to some dark bushes can grow under the tree, some areas because of the influence of various conditions (e.g., windy, drought, etc.), shrub is the main part of the ground vegetation, the formation of bushes. Coastal mangrove forest is also a kind of shrub. Shrubs mainly from height, crown breadth, leaf color,, plant diseases and insect pests, soil ball, origin, etc. 返首页：www.dingzhoumiaomu.com