Erosion in rice fields due to excessive use of chemical fertilizers can be controlled through the following measures:

Reduced Use of Chemical Fertilizers: Limiting the application of chemical fertilizers can help prevent nutrient runoff and soil degradation. Instead, farmers can use organic fertilizers, such as compost or manure, which improve soil health and structure without contributing to erosion.

Crop Rotation and Diversification: Implementing crop rotation and planting cover crops can enhance soil health and structure, reducing erosion. This practice helps maintain nutrient balance and minimizes reliance on chemical fertilizers.