using free-cultivation properly

例句：

1. 1.The farmer practices free-cultivation to increase crop yields.
   这位农民采用自由耕种方法以提高作物产量。
2. 2. Free-cultivation is a sustainable farming method that reduces the use of chemical fertilizers.
   自由耕种是一种可持续的农业方法，可以减少化学肥料的使用。
3. 3. In this region, free-cultivation techniques are being developed to adapt to changing climate conditions.
   在这个地区，正在开发适应气候变化的自由耕种技术。