积温
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Meaning: Growing degree days
How to Understand
积温
积温 (jī wēn) refers to the total amount of heat accumulated over a period, typically used in agriculture to measure the growth conditions for crops. It is calculated by summing the daily average temperatures above a certain threshold, usually 10°C or 50°F.
The character 积 (jī) means 'to accumulate' or 'accumulated,' and 温 (wēn) means 'warmth' or 'temperature.' Together, they convey the idea of accumulated warmth, which is essential for plant development.
In China, 积温 is widely used in farming and meteorology to predict planting times, crop yields, and seasonal changes. It is an important concept for farmers to determine when to plant and harvest crops based on temperature patterns.
Example Sentences
农民根据积温来决定播种时间。
Farmers decide when to plant based on growing degree days.
不同地区的积温差异影响了作物种类的选择。
The differences in growing degree days across regions affect the choice of crop types.