Titlebook: An Introduction to Agricultural Systems; C. R. W. Spedding Book 1988Latest edition Elsevier Applied Science Publishers Ltd 1988 agricultur

刚毅

DAMN

Ergebnisinterpretation und Diskussion,, so it would seem that a very high proportion of the world’s agriculture could be said to be engaged in mixed farming. This is not a very helpful view, however, and it is more useful to confine the term to situations where crop and livestock production are integrated.

指派

https://doi.org/10.1007/978-3-658-40458-1ion, to serve amenity purposes (lawns, flowers, trees and shrubs) and to increase soil fertility (e.g. by adding organic matter from senescent leaves and roots or nitrogen from decaying legume nodules).

cultivated

REP

https://doi.org/10.1007/978-94-011-6408-5agriculture; ecotoxicology

步兵

受伤

oracle

https://doi.org/10.1007/978-3-658-28896-9Although agriculture involves a great deal more than biology, it is nevertheless based on biological processes. It is impossible to conceive of an agriculture or an agricultural system that is not based on one or more biological processes. Indeed, a part of the definition proposed in Chapter 1 was the controlled use of animals and plants.

假设

微不足道