At present, the food we produce can basically meet the needs of the global population, but nearly 800 million people are still in hungry and 2.4 billion people are undernourished. It is estimated that the global population will reach 9.8 billion by 2050, and the food demand will be 70% higher than nowadays. This requires almost doubling food production in developing countries. One way to increase grain production is to develop modern agriculture, including the popularization and use of new technologies such as commercial greenhouses， indoor farms and vertical ...