According to the concept of environment, for farmland locusts, their living environment not only refers to abiotic factors such as sunlight, air, soil and temperature, but also includes biological factors such as other locusts and various other organisms in farmland. Rice needs sunlight, water and air (carbon dioxide) for photosynthesis, and sunlight, water, air and soil are abiotic factors. Snakes in farmland, crops in farmland, microorganisms and other locusts are all biological factors.