0 Fallow land is not planted with crops, in order to improve the quality of the soil. -- 休耕的
1 A fallow period of time is one in which very little happens. -- （一段时间）休眠的，不活跃的
Fuel wood from improved fallows on far m may provide a means to conserve the natural vegetation, which is under threat due to deforestation.
Moreover, sesbania does not coppice, and this means that sesbania fallows have to be re-established after two to three postfallow crops.
While increasing insect pressures can be controlled through appropriate crop rotations and seasonal fallows, in such societies the dominant constraint is weeds.
Improved fallows: effects of species interaction on growth and productivity in monoculture and mixed stands.
The main objective of this paper is to assess the potential of herbaceous legume fallows in improving farm income.
Herbaceous legume fallows are another form of such fallows.
The haulm yield of groundnuts after natural fallows was similar to that after calliandra fallows.
Therefore, for this field type other options have to be pursued to sustain production after shortened fallows.
