1, Hu Xiansu (1April 20th, 894-1July 6th, 968), botanist. Nanchang, Jiangxi. My grandfather was a provincial judge in Jiangxi Province in the Qing Dynasty, and my father was an educator, who founded Nanchang University. He received a good family education since childhood. He studied in Shanghai as a teenager, then studied at Cornell University in the United States, and served as a professor of forestry at Beijing Agricultural College after returning home. 1923.
2. 1928 was the curator of the Natural History Museum of Academia Sinica, and 1934 was the communication researcher of the Institute of Botany. After the founding of the People's Republic of China, he served as a researcher at the Institute of Biology, Chinese Academy of Sciences, the head of the soil group, and a researcher in modern history. He has published more than 50 papers in important academic journals at home and abroad. Its main contributions are: to study taxonomy in biological sciences.
3. Ankang Lycopodium is produced in China and named as "Hushi Lycopodium"; A taxonomic study on Polypodiaceae plants in China was carried out. The classification of gymnosperms in China was studied. A taxonomic study on Equisetum in China was carried out. The genus Agkistrodon in China was studied. The classification of Gesneriaceae plants in China was studied.
4. The classification of Saxifraga in China was studied. A taxonomic study on Machilus from China was carried out. This paper makes a classification study of China Hundred Family Names. A taxonomic study on the genus Cinchona from China was carried out. A taxonomic study on Cinnamomum plants in China was conducted. A taxonomic study on Parthenocissus from China was carried out. The evergreen plants in China were classified and studied.
Growth conditions of plants
1, illumination: illumination is the basis of plant growth and the necessary condition of plant photosynthesis. Photosynthesis is a process in which plants absorb carbon dioxide and release oxygen, which can provide energy and nutrients for plants. Temperature: Temperature has a great influence on the growth of plants.
2. Humidity: Humidity is another important factor for plant growth. Plants need water to maintain normal growth and metabolism. Generally speaking, plants need air humidity between 50% and 70%, and soil humidity between 60% and 80%. Soil: Soil is the foundation of plant growth and provides nutrients and water for plants.
3. Moisture: Moisture is one of the key factors for plant growth. Plants need water to maintain life activities and promote growth and development. Generally speaking, the water required by plants depends on their growth environment, growth stages and climatic conditions. Nutrients: Nutrients are essential elements for plant growth, including nitrogen, phosphorus, potassium, calcium, magnesium and sulfur.