mouldboard plough การใช้

• To avoid damaging the plant crown, a single-blade mouldboard plough or a disc plough with special adjustment should be used.
• By 900 AD in Europe, developments in mouldboard plough, capable of turning over the heavy, wet soils of northern Europe.
• In part this is linked to technological developments, such as the mouldboard plough, that made life in once undeveloped areas more bearable.
• The invention and introduction of the mouldboard plough revolutionized agriculture in Scandinavia in the early Viking Age and made it possible to farm even the poor soils.
• The Romans achieved the heavy wheeled mouldboard plough in the late 3rd and 4th century AD, when archaeological evidence appears, inter alia, in Roman Britain.
• The mouldboard plough greatly reduced the amount of time needed to prepare a field, and as a consequence, allowed a farmer to work a larger area of land.
• A major advance for this type of farming was the turnplough, also known as the mouldboard plough ( UK ), moldboard plow ( US ), or frame-plough.
• The first mouldboard ploughs could only turn the soil over in one direction ( chain ( )  an area of one acre ( about 0.4 hectares ); this is the origin of the acre.
• :I expect changes in agricultural methods such as the three-field system and the mouldboard plough would have a big impact on the type and amount of food people ate, and the population that could be supported.
• The reversible plough has two mouldboard ploughs mounted back-to-back, one turning to the right, the other to the left . While one is working the land, the other is carried upside-down in the air.
• It doesn't make as good a job as the mouldboard plough ( but this is not considered a disadvantage, because it helps fight wind erosion ), but it does lift and break up the soil ( " see " disc harrow ).
• Because of this runner, the mouldboard plough is harder to turn around than the scratch plough, and its introduction brought about a change in the shape of fields  from mostly square fields into longer rectangular " strips " ( hence the introduction of the furlong ).
• In the southern hemisphere, so-called " giant discs " are a specialised kind of disc harrows that can stand in for a plough in rough country where a mouldboard plough cannot handle tree-stumps and rocks, and a disc-plough is too slow ( because of its limited number of discs ).