proportional share-cropping of net income

例句：

1. 1. The farmers in the area are practicing proportional share-cropping to increase efficiency.
   该地区的农民正在实行按比例分成的分成制以提高效率。
2. 2.This innovative approach is a form of proportional share-cropping that could revolutionize agriculture.
   这种创新的方法是一种按比例分成的分成制，可能会彻底改变农业。
3. 3. The government introduced a new policy that encourages farmers to adopt proportional share-cropping to improve soil health.
   政府推出了一项新政策，鼓励农民采用按比例分成的分成制来改善土壤健康。