Farmers choose agricultural plastic products based on several factors including the type of crop, climate conditions, and the specific needs of their farming operations. They consider factors like the product's durability, light transmission, temperature regulation, and resistance to pests and diseases. Additionally, cost-effectiveness, ease of installation, and the environmental impact of the product are also important considerations. Farmers often consult with agricultural extension services, read product reviews, and conduct trials to determine which products perform best under their specific conditions.