农学

The study of soil degradation has become the focus of the 21st century inter- national pedology, agronomy, hydrology, environmental science and soil erosion science, however, a lot of theoretical problems and course mechanism aboutsoil degradation are uncertain hitherto.

土壤退化研究已成为21世纪国际土壤学、农学、水文学、环境科学及侵蚀学科关注的热点，但是直到今天为止有关土壤退化的许多理论问题及过程机理尚不清楚。

The study of soil degradation has become the focus of the 21st century inter- national pedology, agronomy, hydrology, environmental science and soil erosion science, however, a lot of theoretical problems and course mechanism about soil degradation are uncertain hitherto.

土壤退化研究已成为21世纪国际土壤学、农学、水文学、环境科学及侵蚀学科关注的热点，但是直到今天为止有关土壤退化的许多理论问题及过程机理尚不清楚。

Physiocracy ; agriculture priority ideas ; agriculture

重农学派认为重视和发展农业经

It is primarily dedicated to education and research on agriculture including animal science, biochemistry, molecular biology, entomology, plant pathology, forestry, plant science.

它主要致力于农学领域的教育与研究工作，其学科包括动物科学、生物化学、分子生物学、昆虫学、植物病理学、林学和植物科学等。

State Key Laboratory of Plant Physiology and Biochemistry, Department of Agronomy

中国农业大学农学与生物技术学院，北京 100193

Shandong Institute of Pomology, Tai'an, Shandong 271000, China; 2 Department of Science and Technology of Shandong Province, Jinan, Shandong 250014; 3college of Agriculture and Biotechnology,China Agricultural University,Beijing 100193

1山东省果树研究所，山东泰安 271000； 2山东省科学技术厅，济南 250014； 3中国农业大学农学与生物技术学院，北京 100193

1College of Agriculture and Biotechnology, China Agricultural University, Beijing 100193, China; 2 Shandong Institute of Pomology, Tai'an, Shandong 271000, China

周 君1，陈宗玲1，张琼2，王红清1*1 中国农业大学农学与生物技术学院，北京100193； 2 山东省果树研究所，山东泰安271000

1Institute of Botany, Chinese Academy of Sciences, Beijing 100093; 2China Agricultural University, Beijing,100094; 3Institute of Pomology, Shanxi Academy of Agricultural Sciences, Taigu 038104

1中国科学院植物研究所，北京 100093；2中国农业大学农学与生物技术学院，北京 100094； 3山西农科院果树研究所，太谷 030801

China was one of the first countries in the world to study the sc ie nce of farming.

中国是世界上最最研究农学的国家之一。

Plant growth simulation model provides a quantitative approach to plant growth study, which involves multidisciplinary expertise: botany, agronomy, silvics, applied mathematics, physics, computer science and so on.

植物生长模拟模型是定量化研究植物的生长规律的重要手段，涉及到植物学、农学、林学、应用数学、物理学和计算机信息科学等多学科领域。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。