Quản lý sinh học của đất sinh sản như là một thành phần của nông nghiệp bền vững: Triển vọng và triển vọng với tham khảo đặc biệt trong khu vực nhiệt đới Hans Jenny đã mô tả phát triển đất như là một chức năng theo thời gian của sự tương tác giữa khí hậu, vật liệu cha mẹ, địa hình, và sinh vật (Jenny, 1941). Trong khi mô hình này đã được đưa ra để tài khoản cho các kết quả của quá trình lâu dài, Jenny, phù hợp với các nhà khoa học đất khác, cũng công nhận. | CHAPTER 7 Biological Management of Soil Fertility as a Component of Sustainable Agriculture Perspectives and Prospects with Particular Reference to Tropical Regions M. J. Swift INTRODUCTION Hans Jenny described soil development as a function over time of the interaction of climate parent material topography and biota Jenny 1941 . While this paradigm was devised to account for the outcome of long-term processes Jenny in accord with other soil scientists also recognized the importance of the biota to the more immediate properties of soil fertility. Despite this recognition of the significance of biological processes soil biology as a discipline has historically played a relatively small role in the development of soil fertility management practices. The role of science is to provide a predictive understanding of natural phenomena. Armed with this understanding and within the limits of certainty that science can set humans gain the potential to manage their physical and biological environment with insight and sensitivity. In ecology with the study of the biological world at the scales of population community ecosystem and landscape the capacity for prediction has been limited in comparison with that in chemistry or physics or in other areas of biology such as physiology and genetics. Thus science-based soil management has until recently largely treated the soil as a physicochemical system. The biological components of soil management models are largely restricted to the physiological response of the plant to soil conditions. During the last two decades however priorities in soil management have shifted and led to the development of new approaches 1997 by CRC Press LLC that can be gathered together under the title of biological management of soil fertility. Biological management of soil fertility implies the harnessing of the biological resources of the ecosystem particularly those of the soil itself for the manipulation of soil fertility. We should be clear at the .
