英语作文,描写种植物的过程.
题目
英语作文,描写种植物的过程.
答案
While planting different types of trees differs in the details,all trees eventually end up in a hole.But not any old hole will do.
The most common mistake when planting a tree is a digging hole,which is both too deep and too narrow.Too deep and the roots don’t have access to sufficient oxygen to ensure proper growth.Too narrow and the root structure can’t expand sufficiently to nourish and properly anchor the tree.
As a general rule,trees should be transplanted no deeper than the soil in which they were originally grown.The width of the hole should be at least 3 times the diameter of the root ball or container or the spread of the roots in the case of bare root trees.This will provide the tree with enough worked earth for its root structure to establish itself.
When digging in poorly drained clay soil,it is important to avoid ‘glazing’.Glazing occurs when the sides and bottom of a hole become smoothed forming a barrier,through which water has difficulty passing.To break up the glaze,use a fork to work the bottom and drag the points along the sides of the completed hole.Also,raising the bottom of the hole slightly higher than the surrounding area.This allows water to disperse,reducing the possibility of water pooling in the planting zone.
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
- 一批大米食堂用了30%,剩下的比用的多240千克,这批大米有多少千克?
- 两筐苹果共重若干千克,甲筐占总重量的20分之11,如果从甲筐中取出15千克放入乙筐,
- 分解因式 (1)4a²-(b-c)²(2)3(a+b)-27c²(3)x²(x-y)-4(y-x)²
- 宏运公司组织一次小组外出活动,8人(司机除外)分别乘两辆小汽车赶往火车站,其中一辆汽车在距离火车站15千米处出了故障,此时离火车停止检票时间还有42分钟,这时可以利用的交通工具只有一辆汽车,或者步行.
- 如果-axy的b次方是关于x,y的一个四次单项式,且系数为8,求ab的值
- 1食堂有大米1200千克,吃去的与剩下的比是3比5.吃去了多少千克?
- 一个数除150余6,除210少30,除350余14,这个数最大是多少?
- 七年级上册数学第103页13、14、15题怎么做
- x²-9/x-3约分
- this pair of trousers----------twenty dollars.1are 2is 3/ 4am
热门考点