This paper mainly studies the activities of organisms (mainly microorganisms) living in soil and their relationship with the transformation and circulation of substances in soil. The contents include the quantity, composition and distribution of microorganisms in soil, biological cycle of carbon, nitrogen, phosphorus and sulfur, biological nitrogen fixation, decomposition of organic matter, formation of humus and its influence on soil fertility.

Soil fertility and plant nutrition: This paper mainly studies the ability of soil to supply mineral nutrients and the relationship between its influencing factors and plant nutrition. The contents include the essence and index of soil fertility, the intensity and capacity factors of soil nutrients, the nutritional diagnosis of soil and plants, and the requirements of main crops for soil fertility. The Soil House Forum is dedicated to the exchange of soil professional knowledge and the release of employment information, and provides a place for professional exchange of soil professionals.

The main sections are soil technology, agricultural information, agricultural technology, materials for postgraduate entrance examination in soil science, courseware delivery, and enrollment information in soil science. China Agricultural University (National Key Discipline)

Nanjing Agricultural University (National Key Discipline)

Northwest A&F university (national key discipline)

Shenyang Agricultural University (National Key Discipline)

Graduate School of China Academy of Sciences, Nanjing Institute of Soil Research of Chinese Academy of Sciences, Shenyang Institute of Applied Studies of China Academy of Sciences, Chengdu Institute of Mountain Disasters and Environment of Chinese Academy of Sciences, Research Center of Soil and Water Conservation of China Academy of Sciences, and China Academy of Agricultural Sciences.

Northeast Agricultural University, Northeast Forestry University, Bayi Agricultural University, Jilin Agricultural University, Inner Mongolia Agricultural University, Beijing Forestry University, Hebei Agricultural University, Shandong Agricultural University, Shanxi Agricultural University, Henan Agricultural University, Nanjing Normal University, Nanjing Forestry University, Yangzhou University, Hohai University, Zhejiang University, Zhejiang A&F University, Anhui Agricultural University, Hunan Agricultural University, Huazhong Agricultural University, Jiangxi Agricultural University and Fujian Agriculture and Forestry University. Hainan University, Guizhou University, Yunnan Agricultural University, Hainan University, Guangxi University, Southwest University, Sichuan Agricultural University, Gansu Agricultural University, Xinjiang Agricultural University, etc.