gross-crop rotation

例句：

1. 1. To improve soil fertility and reduce the risk of pesticide resistance, farmers should adopt a gross-crop rotation system.
   为了提高土壤肥力并减少农药抗性风险，农民应该采用大田轮作系统。
2. 2.The government has implemented a policy to promote gross-crop rotation, aiming to increase crop diversity and enhance food security.
   政府实施了一项政策，以促进大田轮作，旨在增加作物多样性并增强粮食安全。
3. 3. In this region, the gross-crop rotation system has been widely adopted, which helps to maintain soilhealth and prevent soil degradation.
   在这个地区，大田轮作系统得到了广泛采纳，这有助于保持土壤健康并防止土壤退化。