triple-cropping of rice

例句：

1. 1.The farmer triple-crops his land to maximize yield.
   这位农民通过三重耕作来最大化他的产量。
2. 2. The government is promoting triple-cropping to increase crop yields.
   政府正在推广三重耕作以增加作物产量。
3. 3.This region has a unique triple-cropping system that benefits both agriculture and ecology.
   这个地区拥有一种独特的三重耕作系统，既有利于农业也有利于生态。