Final answer:
The advantages of paddy rice are its high productivity, ability to regulate temperature and control weeds, and the ability to practice intercropping. The disadvantages are the lack of nutritional value and the labor-intensive and land-intensive cultivation process.
Step-by-step explanation:
Rice feeds more people on earth than any other crop. The advantages of paddy rice over dry rice are that it produces more food per acre than any other grain, regulates temperature, controls weeds, and requires less fallow time. Additionally, paddy rice farmers practice intercropping, introducing fish into the fields to reduce pesticide and fertilizer costs while adding dietary protein and reducing mosquito-borne diseases. The disadvantages are that rice only provides carbohydrates, so people in wet rice regions must supplement their diets, and rice cultivation is labor-intensive and land-intensive.