Is farmland a word?

"Tian Tu" is a Chinese word. Its pinyin is tiántǔ incarnation, and its explanation is Tian Tian. Cultivated land in Ming dynasty is also called "mu", which is generally called cooked land, including official land and private land. When studying the economic history of the Ming Dynasty, we must never equate farmland with cultivated land, which is only a part of farmland. What is certain is that the figure of more than 8.5 million hectares in Hongwu's twenty-six years of "Zhang Zhi" should be the total amount of cultivated land in China, including cultivated land and cultivated land wasteland.

Source: Tang Du Fu's "Tour of the Second Temple of Yuelu Mountain Daolin": "Taoyuan people changed dynasties, and the land in Orange Island is still fertile."

Make sentences:

1, the diseased body and diseased soil are the primary infection sources of the disease.

2. The influence of temperature on nutrient concentration of soil solution in wheat field was analyzed by using measured data.

3. In order to effectively prevent wind erosion of farmland soil, high stubble treatment and various measures to increase surface roughness can achieve the maximum wind erosion prevention effect.

4. Soil moisture prediction is the basis and premise of effectively regulating farmland soil moisture.

5. The effects of herbicide mefenacet on soil respiration intensity and enzyme activity in paddy field were studied.