Lawn knowledge
What's a lawn:
Grasses are grasslands that are greened and beautified by artificial construction or maintenance. It is one of the signs of the level of civilization of a country, a city. The lawn is planted with long-born, small grasses, and weared artificial grasses
Composition of the lawn
This means that the surface of the soil is covered with grasses and other finely decorated plants, with its roots and stubs。
Role of lawn
• beautification of the environment, landscapes, cleaning of the air, conservation of soil and water, provision of outdoor activities and sports venues。
Grassseeds
Good seeds for lawn and grass production。
Common (comon seed)
General grass seeds (e. G. Grass seed in china) are common grass. Quality is uneven and unstable due to differences in species or ecology。
Varieties (variety): a species chosen or nurtured。
Patented species (protarily variey): only varieties that are marketable by owners。
Common (common variey or commodity varity)
Registered certification system (certification system): a certification scheme introduced by different international countries shortly after world war ii to promote multilateral trade in seeds and increase agricultural production. Different countries have different certification systems。
The oecd system: is the seed registration certification system of the organisation for economic co-operation and development (oecd). Seven of them were implemented, one of which was grass and legume seeds, and grass-grass was implemented under this programme. European countries only allow the sale of seeds certified by the system. Australia and new zealand also use this system。
Aosa: association of official seed analysts of north america. Founded in 1908 by the united states and canada。
Esta: european seed testing association. Founded in france in 1927。
