沙漠+杨树修枝
Desert + Poplar Pruning
沙漠
塔敏查干沙漠
“白色魔鬼"
“塔敏查干沙漠”自奈曼旗东部伸入到库伦旗,曲折蛇行入科尔沁左翼后旗境内,呈东西走向,在库伦北部坨甸区的南沿,长约60公里,宽约5公里,海拔250米—300米之间。
塔敏查干是蒙古语“白色魔鬼"的意思。塔姆意为是狱,塔敏是塔姆加词缀表示所属in构成,查干的意思是白色,也指沙漠,这个意思在地名里常见。
沙漠风光
“八百里瀚海”
在这浩瀚的沙海中,植被稀少。除其腹地生长的黄柳条、沙蒿、骆驼蓬等少许沙地植被外。一概是金光灿灿的明沙,有的沙丘高达70—80米,连绵起伏,广裹无际。在酷热的夏日,沙漠深处偶而会出现“沙市蜃楼”的奇观,或楼台殿阁,或都市风光,绡纵即逝,如梦如幻。
杨树修枝
修枝是一项重要的栽培技术,广义上的修枝可以分为整形、修枝和清干3种作业。
整形
获得通直饱满的树干
剪去影响顶梢生长的竞争侧枝
清干
减少无价值的消耗
清除修枝后出现的萌条
修枝
获得无死节的良好木材
清除主干上的部分侧枝
为什么要修枝?
根据库伦的实际情况,我们选择4月份(萌芽前)进行
何时修枝?
开始年份:栽植后第三年
秋冬两季(生长期外)
好处:不易感染病虫害
坏处:容易在修枝口处萌发新枝
春季(生长期内)
好处:修枝伤口易愈合
好处:抑制修枝口萌发新枝
第1—4年林地
第5—8年林地
8年以上林地
修枝工具
安全第一
修枝剪
修枝锯
修枝位置
要求:切口平整,不撕裂周围树皮
A 留茬过长,容易形成死结
B 留茬适中
C 留茬过短,容易撕裂树皮
以下的修枝正确吗?
这是我们修枝地点!
Desert
Taminchagan Desert
"The White Devil"
Stretching from the east part of Naiman Qi, the Taminchagan Desert crosses the borders of Kulun Qi, then touchs Keerqinzuoyihou Qi in the east. It is a belt-shaped sandy land corridor, 250-300m in elevatioin, 60km long and 5km wide.
In Mongolia local language, Taminchagan means "the white devil". Tam means hell and -in is a common affixes. Chagan means white, also means the white sandy lands, which is common seen in toponym.
The desert view
”Eight hundread li sandy land"
In this desert, the vegetation is scare. Beside sandy species such as salix, Artemisia desertorum and harmel, bare sands can been seen a lot. Some sand dunes stand 70-80 meters tall and roll far. In hot summer, mirage can be spotted occationally in the desert's heart.
Pruning for Poplars
Pruning is an important cultivation technique. It includes the reshaping, pruning, and sprout cutting.
Reshaping
Ensure the trunk grows straight
Cut off the competing lateral branches
Sprout Cutting
Reduce unnecessary consumption
Clear regenerated branches
Pruning
Foster a larger diameter of solid wood
Clear branches in the trunk part
Why pruning?
According to the local condition, we prune the poplars in April (before new sprouts grow).
When to prune?
Starting: Third year after planting
Autumn & Winter (not growing season)
Pro: Less insect infection
Con: Branches will grow from the cuts
Spring (growing season)
Pro: Easier for cuts to heal
Con: Restrain new branches from cut
For forests 1-4 years old
For forest 5-8 years old
For forest >8 years old
What are the tools?
Safety First
pruning shears
pruning saws
In what parts to prune?
When pruning, cuts should be smooth, without scarring the trees or leaving pieces of torn bark.
A) Stubble too long, form knots
B) Appropriate
C) Stubble too short, easy to tear off barks
Which is correct?
This is our pruning site!
上海市人民路300号外滩SOHO-D幢3楼303室
3/F Room 303, Bund SOHO Building D, 300 Ren Min Road, Shanghai
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