crop basal area

例句：

1. 1. The farmer carefully monitors the growth of his crops to ensure optimal yield.
   这位农民仔细监控他的作物生长，以确保最佳产量。
2. 2. The research team is studying the effects of different crop rotations on soil health.
   研究小组正在研究不同作物轮作对土壤健康的影响。
3. 3.The farmers in this region rely heavily on their crop basal area for livelihood.
   该地区的农民高度依赖他们的作物基面积来维持生计。