Describe the new techniques during the Song dynasty which led to increased farming.

Song Dynasty was a famous Chinese dinasty ruling from 10th till 13th century.

Among other things, this period is famous for massive agricultural improvements which increased crop production. Subsequently, that led to the increase in China's population.

Probably the most famous improvement was the development and use of "early ripening rice". This rice had a shorter life cycle which meant that it could grow 2 - 3 times per year, making more crops.

Also, new irrigation systems and techniques were invented which allowed the crops to be watered more efficiently and preventing drought.

We must not forget that China started farming other crops at that time including tea and cotton.

All of this improved farming making it one of the most notable legacy of the Song Dynasty

Explanation:

levels of production can be increased by technology while holding labor and capital constant, because increased technology makes the production process more efficient. subsequently, the lras curve is almost a vertical line, that can shift to the right, with an increase in technology.

the relationship between the lras curve and the ppc is that both can make the economy could grow. the ppc achieves that when it shifts outward because of more resources or technological advances while the lras curve shifts if more resources are developed or if there are technological advances.

the lras curve is a vertical line at an output level that represents the number of goods and services a nation can produce over a sustained period using all of its productive resources as efficiently as possible with all of the current technology available to it.

the production possibilities frontier (ppf) is a graphical device that is used for economic analysis of production decisions because the ppf measures the maximum possible combinations of two goods that an economy is capable of producing with its currently available resources and technology.