作物种植 - 2026 进行中

科目: 作物种植
级别: VI
类别: 大学生
测试题目: 英语
问题示例: In a crop rotation, what is a common benefit of including a deep-rooted crop? It eliminates the need for all fertilization, It can improve soil structure in deeper layers, It prevents every crop disease, It always increases soil salinity