It's green season
The green lawn is for everyone
Basking in the sun, picnicking, walking the dog
The first choice for engaging in objects, drinking beer, and cutting short paths
Recently, Lu Rongjun has always been asked a question by his friends
There are many green spaces that do not prohibit visitors from carrying out activities on the lawn
Nor is there any notice of "the grass is green, it is a pity to step on"
Even stranger, it is rare to see grass being trampled on
But there are also many green spaces and park lawns
But slogans such as "No stampede" can be seen everywhere
There are also special personnel to supervise at all times
So why is this difference?
Here's why
There are four main aspects:
Breed issues
The choice of grass in the lawn generally meets the following characteristics:
Easy to prune, its growth point should be low, such as golf green lawn mowing height of about 5 mm;
There are many leaves, and it has good elasticity, softness and color;
It has a developed creeping stem, strong expandability, and can quickly cover the ground;
Strong growth potential, fast reproduction, strong regeneration;
Resistant to trampling, such as withstanding back and forth pedaling;
After pruning, it does not flow pulp juice and is harmless to people and animals;
Strong stress tolerance, can grow well in drought and low temperature conditions.
Some places will choose to be resistant grass species, and some lawns are greening, beautifying, ornamental, the use of ornamental grass species, if excessive trampling will lead to death. Generally, the financial and human input of the maintenance cost of the generally resistant turf grass is higher than that of the ornamental type.
The climate is different
The world is vast on land and has a variety of climate types. Different places in the same season will also have different climates.
For example, in Shanghai, China, the summer yellow plum rainy season, cold season lawn grass, such as rye grass, high fescue, early maturing grass, etc., can not withstand high temperature and humidity, susceptible to disease infestation, and even death; in autumn and winter, warm season lawn grass such as dog tooth root, knotted grass, false thrift grass, bison grass, etc., the aboveground part will die, it is impossible to be like a large green grass in Europe.
In northern Cities in China, in order to better extend the green period, cold season grass species are usually used, but these grass species have shallow roots, fragile stems, and poor pedal resistance, so they are not trampled. The difference in climate not only affects the pedaling ability of the lawn, but also affects the resilience of repeated trampling.
For example, most of the European region belongs to the oceanic climate, with obvious characteristics: no severe cold in winter, no heat in summer, and more uniform precipitation throughout the year, which is very suitable for grass growth, so it is green all year round.
Population density differences
Not only the climate, the area is different, its population density is also different, the lawn as a venue for public activities, the probability of being trampled is also very different, in the densely populated area once the open lawn is allowed to be trampled, the best lawn will also be due to excessive trampling and death
Lawn maintenance costs are large and the process is complex
In order to maintain the beauty of the lawn, the maintenance of the lawn is very critical, and it is necessary to invest high manpower, material and financial resources, and the process leaves are very complicated. For example, the soil can not choose the construction of waste soil backfill or use ordinary soil, easy to breed bacteria and insects, affecting the normal growth of turf; when the time to remove weeds in the lawn, to prevent competition for nutrients; regular fertilization to promote lawn growth; lawn growth, to carry out appropriate pruning.
Source: Shanghai Academy of Landscape Architecture Planning