灌溉农业

例句：

1. 1. Irrigation is essential for maintaining the health of crops.
   灌溉对保持作物健康至关重要。
2. 2. The farmer used to irrigate his fields with rainwater.
   这位农民过去用雨水浇灌他的田地。
3. 3.The irrigation system was designed to prevent soil erosion.
   这个灌溉系统旨在防止土壤侵蚀。