1. What are the requirements for water sources of tea?

What is the temperature requirement of tea?

3. What is the relationship between the distribution of tea on the terrain?

4. Is there a relationship between tea and precipitation?

Second, analyze the problem.

1. During the research of tea garden, it was found that there were less tea leaves near the water and more on the hillside, so it was speculated that the distribution of tea leaves was related to the water source and might be far away from the water source.

2. In the process of research, I found that the growth of tea in different places is different, and the growth of tea in sunny places is better than that in shady places.

[13] Changsha has a low altitude and relatively flat terrain, and tea is distributed in hills, so it is speculated that tea is distributed in hills from low to high.

In the tea garden, we combine geography and guess that tea likes to grow in places with heavy rainfall.

Third, solve the problem.

(1) In the tea tree region, Asia is the key region, in the Asian region, China is the key region, in China, the Yangtze River Basin is the key region, while in the Yangtze River Basin, Sichuan, Yunnan, Zhejiang and Fujian are the two key regions. India, Pakistan and Southeast Asian countries are in a favorable position in the survival of some specific tea varieties. Its proportion accounts for about 10% of the world's tea-producing characteristic tree species area, and China accounts for about 50%. Tea trees like shade, are afraid of waterlogging and like diffuse light. If there is serious water accumulation, the tea trees will die. Therefore, the water permeability of the planting area should be considered when planting tea. It can be seen that although tea does not necessarily need sufficient water, the water source should be stable, so tea is distributed near the water source.

3. Tea is a subtropical perennial, shade-tolerant, warm and wet. The annual average temperature and monthly average temperature during production should be above 15℃. In early March, tea buds germinated and grew, and fish leaves spread rapidly; When the temperature is stable above 10℃, the growth of tea buds and leaves is accelerated, and new shoots are extracted; It grows faster at 15 ~ 20℃; It grows most vigorously at 20 ~ 30℃, but it is easy to age, so there is a saying that tea grows thick in the long summer night; When the highest temperature is higher than 35℃, the growth stops; In autumn and winter, when the temperature drops below 10℃, it stops growing and enters a dormant period. The minimum survival temperature of tea varies with varieties, ranging from-12 to-8℃.

3. 90% ~ 95% of the dry matter of tea tree is synthesized by photosynthesis. Light has a great influence on the growth and quality of tea trees, and red light and yellow light are easily absorbed and utilized by tea trees. At an altitude of 500 ~ 800 m, the number of clouds and rainy days increases with the increase of altitude, so there is more diffuse light, and the red and yellow light contained in it is beneficial to the formation of amino acids and vitamins. The tender tea leaves, fat leaves and strong fragrance are the climatic reasons for producing good tea in mountainous areas.

4. Water is an important part of tea tree. In the process of tea picking, new buds keep sprouting, and tea leaves are picked one after another, which requires constant hydration. Therefore, the annual rainfall of tea production is about1.500mm, and the monthly rainfall is above1.000mm.: In tea gardens with good irrigation conditions, the annual rainfall is above 1000mm and the relative humidity is about 80%.

5. In conclusion, tea planting is related to sunshine, moisture, terrain difference and temperature difference.