作物种植 - 2026 进行中

科目: 作物种植
级别: VIII (I级最简单，XII级最难)
类别: 大学生
试题语言: English
题数: 15
问题示例: A crop has a base temperature of 5°C. If the mean air temperature is 20°C for 10 consecutive days, what thermal time accumulates during this period? 150 degree-days, 200 degree-days, 250 degree-days, 300 degree-days