一、尽量选用本地绿化苗木

A, try choosing local afforest nursery stock 

　　本地苗圃繁育或引进后在本地苗圃驯化后的绿化苗木，对本地土壤和气候条件的适应性更强，随起随种，成活率会更高，同时还可避免将外地的病虫害带人本地。在盐碱地区绿化中，选择本地绿化苗木更为重要。

Introduction in local nursery breeding or at a local nursery greening seedlings after the domestication, stronger adaptability to the local soil and climate conditions, increases with the increasing the kind, the survival rate will be higher, but also can avoid take plant diseases and insect pests in the field of local people. In saline area afforest, the choice of local afforest nursery stock is more important. 

二、尽量选用苗圃地培育的绿化苗木

Second, try choosing viability cultivation of green seedlings 

　　苗圃地培育的绿化苗木，一般都经过多次的移栽，须根多，栽植容易成活，缓苗也快。野生苗没经过移栽，主根发达，须根少，移植成活率相对较低。目前有些园林绿地为了尽早显现绿化效果，采购大规格树，但这种苗木树龄一般偏大，根盘小，须根少，枝条弱小，发育不充实。移植到空旷地后，受强光照射和大风吹袭，易发生抽条和日灼，这种绿化苗木也不及苗圃培育的绿化苗木容易成活，且成材后也往往是长势较弱。

Viability foster afforest nursery stock, generally after many of transplanting, fibrous root, plant to survive and slow seedlings. Wild seedlings after transplanting, root developed, less fibrous root, transplant survival rate is relatively low. At present some garden green space in order to manifest greening effect as soon as possible, purchase specification tree, but the tree seedlings generally slants big, root plate is small, less fibrous root, small branches, development is not full. After transplanted into the open, the glare and winds blowing, prone to smoke and burning, the afforest nursery stock is not as good as a nursery foster green seedlings to survive, and tend to be growing weaker after the timber. 

三、外地购苗首先要保证绿化苗木质量

Three, from purchase first to ensure the quality of green seedlings 

外购苗要尽量选择与本地苗木生长环境条件差异不大的苗源地，或经实践证明能够保证在本地种植成活的苗木。

Outsourcing seedlings to try to choose and seedling growth of local environmental conditions difference in seedling source, or practice has proved that can ensure the survival of locally planting seedlings. 

四、最好实地看苗

Four, you'd better see seedling field 

　　采购常绿针叶树及抗寒性差的树时，最好去实地看苗，一是看绿化苗木量是否充足；二是看绿化苗木质量是否符合要求，有无病虫害，以免出现差错而造成不必要的损失或耽误工期。春季选购常绿针叶树或抗寒性差的树种时，还要注意察看育苗地的墒情，未浇冻水或冻水浇灌不足，土壤墒情差的，绿化苗木成活率相对较低。

Purchase evergreen conifer and hardiness of tree, had better go to field to see miao, one is the green seedling quantity whether enough; The second is whether afforest nursery stock quality meets the requirements, presence of plant diseases and insect pests, in order to avoid some mistakes and cause unnecessary loss or delay the construction period. Spring evergreen conifer or cold hardiness of choose and buy when the difference of tree species, note also see seedling and soil moisture and not poured cold water or cold water is insufficient, with poor soil moisture, virescence seedling survival rate is relatively low. 

五、认真进行绿化苗木检验绿化苗木到货后，一定要认真进行绿化苗木检验。

Five, the earnest to afforest nursery stock inspection greening seedlings, after the arrival of the goods must be carefully to afforest nursery stock inspection. 

1.注意观察绿化苗木是否有失水现象，主要看其根部及枝叶，绿化苗木一但失水将严重影响成活。

1. Observe afforest nursery stock whether there is water loss phenomenon, basically see the roots and branches and leaves, green seedlings one but water loss will seriously affect the survival. 

2.注意检验绿化苗没有无病虫害，叶部病虫害比较容易发现，而枝干病虫害往往被忽视，特别是一些当年侵入的蛀干害虫不易被发现，枝干害虫往往存在于较大规格的绿化苗木中。当绿化苗木带土球时，根部病虫害及在根部土壤内越冬的害虫也往往会被忽视，此时要注意观察根系裸露部分的断口及根皮颜色是否正常，根部皮层是否腐烂易剥落，根部有无白色或紫色菌丝体、孔洞、锯沫状物及瘤状突起等。在根部越冬的害虫一般在浅土层，要注意检查。

2. Pay attention to the inspection greening seedlings without no plant diseases and insect pests, plant diseases and insect pests of leaf is relatively easy to find, and plant diseases and insect pests of branches often overlooked, especially some was invading pests was not easy to decay was found, branches pest often exist in large size of greening seedlings. When green seedling with soil ball, the root of plant diseases and insect pests and wintering in the root soil pests also tend to be ignored, this time to pay attention to observe the fracture surface of exposed part of the root and root skin color is normal, whether the root cortex rotting easy peeling, roots have white or purple mycelium, holes, saw foam disc protrusion and tumor, etc. In the roots of wintering pests in shallow soil layer, pay attention to check. 

3.对于带土球的苗木，注意检查土球是否完好并符合规格要求；在绿化苗木调运时，一般土球都要打好包装，应打开包装检查土球是否完好。最好到实地查看苗源地的土质，若为沙土或沙壤土，再经长途运输，则易出现土球松散的现象。另外，还要谨防假土球现象：有的苗农在起苗时未带好土球，而是用湿土将根系包住，这样不利于绿化苗木成活。另一种情况是冬季调运绿化苗木时，卖苗人会利用低温土壤上冻来制造假土球。

(3) for seedling with soil ball, ball check soil are in good condition and conform to the specifications; When shuffled greening seedlings, general soil ball to play good packaging, check soil ball should be opened the package. To the field view the soil of the source of the best, if for sand or silty loam, then through long-distance transportation, is easy, the phenomenon of the soil loose ball. In addition, but also guard against false soil ball phenomenon: some MiaoNong in seedling when did not take the ball, but with the wet soil to encase the root, that is bad for virescence seedling survival. Another case is winter dispatching greening seedlings, sell miao people will use low temperature frozen soil to create false ball. 

4.注意检查枝干部有无伤皮或劈裂如伤皮较多或枝干有劈裂伤，将影响树体营养与水分的运输，不利于绿化苗木成活。

4. Check branch cadres have without injury or split as wounded skin more or branches have split, will affect the transportation of tree nutrition and moisture, is not conducive to virescence seedling survival.