2.2.1 作物类型对每日作物需水量的影响 PART I
来源:
|
作者:武汉睿农科技有限公司
|
发布时间: 2023-10-27
|
687 次浏览
|
分享到:
在确定作物类型对日常作物需水量的影响时，总是参考成熟的作物；植物已达到最大高度；它们以最佳方式覆盖地面；他们可能已经开始开花或开始结实。当作物完全生长时，它们的需水量最高。这是他们用水需求的所谓“高峰期”。
问题
估算标准草需水量为 6.0 毫米/天的地区的柑橘、香蕉、洋葱、黄瓜、清洁栽培的苹果树和小米的需水量。
答案
Citrus: | -30% (compared to grass); thus the water need of citrus is 6.0 - 30% = 6.0 -1.8 = 4.2 mm/day |
Bananas: | +20%; thus the water need of bananas is 6.0 + 20% = 6.0 + 1.2 = 7.2 mm/day |
Onions: | same as grass; thus the water need of onions is 6.0 mm/day |
Cucumber: | -10%; thus the water need of onions is 6.0 - 10% =6.0-0.6 =5.4 mm/day |
Apples (clean): | same as grass; thus the water need of clean cultivated apples is 6.0 mm/day |
| If the apples have a cover crop in between the trees, the water need would be 20% higher than grass and thus: 6.0 + 20% = 6.0+1.2 = 7.2 mm/day. |
Millet: | +10%; thus the water need of millet is 6.0 + 10% =6.0+0.6 = 6.6 mm/day |
