What are the disadvantages of traditional modern agriculture?

Changing from traditional agriculture to modern agriculture, improving agricultural productivity and developing rural economy are the basic trends of agricultural development in the world today. It can also be said that agricultural modernization is the only choice to ensure human survival and reproduction. However, it should also be noted that due to the high industrialization of modern agriculture, the input of a large number of substances such as fertilizers, pesticides and machinery is also directly and indirectly threatening the development of agriculture and the survival of mankind. To sum up, there are mainly the following three aspects:

Increase resource consumption. Because a characteristic of modern agriculture is mechanization of operation, coupled with the input of chemical fertilizers and pesticides, it needs to consume a lot of fossil energy, so some people call modern agriculture "petroleum agriculture". According to "Analysis of Agricultural Dynamics" written by F 1u, American agriculture consumes 7. 1.4kJ of petrochemical energy for every food energy produced 1.0kJ (including 0.62kJ of plant food energy and 0.38kJ of animal food energy), of which 1.4kJ is used for crops.

In essence, agriculture is an industry that uses solar energy. However, modern agriculture relies too much on the input of petroleum, fertilizers and pesticides, which makes the grain production process a process of exchanging chemical energy such as petroleum for grain energy. So it can be said that the road of petroleum agriculture deviates from the essence of agriculture. At the same time, because energy resources such as oil, coal and natural gas and fertilizer resources such as phosphorus and potassium are non-renewable resources in the world, a large amount of consumption will inevitably accelerate the process of exhaustion of these resources. Furthermore, because modern agriculture is based on cheap resources, once there is a resource crisis, the blow to modern agriculture will be immeasurable.