What are intensive agriculture and extensive agriculture and commodity agriculture?

Extensive agriculture is to gain benefits at the expense of the environment, with less investment, low efficiency and unsustainable. Intensive agriculture means increasing capital investment in agriculture, which is as specialized, large-scale and market-oriented as the United States. Intensive agriculture is like the monsoon paddy field in China, which allows the land to exert its maximum potential, concentrate manpower and material resources and maximize benefits. In extensive agriculture, the investment in science and technology is less, while in intensive agriculture, the investment in science and technology is relatively more.