What is the three garden system Introduction to the three garden system

The cultivated land of a typical manor is roughly divided into three parts: spring ploughing, autumn ploughing, and fallow, which are used for spring sowing, autumn sowing, and leisure in turn. In this way, each piece of land can be fallowed for one year after two years of continuous cultivation, which is known as the "three-nursery system". The cultivated land was divided into strips, and the land of the feudal lord and the land of the serfs were intertwined.

There is woodland in the manor, which provides firewood and timber; There is grass, which provides fodder; There are rivers that provide water; Some also have ponds for fish farming. Some feudal lords' residences were often built in the form of castles as defense centers, as well as churches and clergy residences. In addition, there were mills, ovens and various workshops belonging to the feudal lords.

The serf's dwellings were generally small and of poor quality, and there was a small plot of garden around the farmhouse for his use, and his share of land was far from the farmhouse. This diagram reflects a typical Western European feudal manor centered on a castle, with the castle of the feudal lord in the distance, and the arable land around the castle where the peasants toiled.

The so-called "three nurseries" refers to "plant (spike) row nursery, plant (spike) nursery, original seed nursery", and "three nursery system" is a breeding method that adopts the procedure of single plant selection, line comparison, and mixed line propagation to produce the original seed. It has been popularized and applied in China for nearly 50 years, and is familiar to the majority of agricultural technicians and has a relatively deep mass foundation.

This is a European method of rotational tillage, where one third of the land is cultivated, and the rest is fallow, or something else, to nourish the soil.

The four-garden type town source rotation system is a kind of cultivated land zoning rotation system. A system of cereal cultivation that began to emerge in Europe in the 18th century. Because it was first implemented in Norfolk, England, it is also known as "Norfolk pants dismantling wheel planting".

In this cropping system, all cultivated land is divided into four cultivated areas, and turnips are planted separately in each of the four cultivated areas.

Barley, clover.

It abolished the pure state except for land leisure, and the cultivated land after the crop harvest was not used as grazing land, and the grazing land was changed to cultivated land, which expanded the crop planting area; It grows leguminous forage grass and applies livestock manure to accelerate the recovery and improve soil fertility, which is not only conducive to the steady growth of crop yield, but also conducive to the long-term rational use of cultivated land, and can also provide high-quality livestock feed. It promotes the transformation of livestock breeding from grazing to house feeding, which is conducive to the improvement of the production level of animal husbandry.

The three-nursery system is a typical rotational farming system of Western farms. The cultivated land was divided into strips, and the land of the feudal lord and the land of the serfs were intertwined.