Contemporary agriculture relies mainly on biotechnology, chemical technology and electromechanical technology. Biotechnology is the cornerstone of contemporary agricultural development and progress, but also the eternal theme. Chemical technology is the second cornerstone to support contemporary agriculture, but contemporary agriculture relies too much on chemical technology and chemicals, resulting in increasingly serious environmental pollution, biological chain fracture, ecosystem damage, food safety concerns and other issues, causing widespread concern and anxiety. Modern agriculture should be reformed, and one of its feasible paths is to expand the application of physical technology and expand the connotation of electromechanical technology with "physical technology". We predict that the development and reform of modern agriculture will depend on biotechnology, physical technology and chemical technology, and "physical agriculture" will gradually become more visible in modern agriculture, and will become one of the important characteristics and cornerstones of modern agriculture. The so-called "physical agriculture" refers to the application of such physical methods and technologies as light, electricity, magnetism, sound and heat in agricultural production. Its advantages are that it can reduce the input of chemicals, optimize the habitat, improve the output and quality of agricultural products, reduce pollution, reduce costs and improve benefits.

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