Agriculture Reference
In-Depth Information
• For irrigation machinery, it declined from 450.99 g/kWh to 401.25 g/kWh,
an annual decline of 0.83%.
• For primary processing machinery, it declined from 411.91 g/kWh to
364.70 g/kWh, an annual decline of 0.87%.
• For animal husbandry machinery, it declined from 426.16 g/kWh to 375.13
g/kWh, an annual decline of 0.91%.
• For fishery machinery, it declined from 383.17 g/kWh to 328.06 g/kWh, an
annual decline of 1.10%.
• For forestry machinery, it declined from 414.97 g/kWh to 370.71 g/kWh,
an annual decline of 0.80%.
• For transportation machinery, it declined from 408.68 g/kWh to 352.89 g/
kWh, an annual decline of 1.04%.
• For farmland construction machinery, it declined from 338.56 g/kWh to
297.35 g/kWh, an annual decline of 0.92%.
Figure 6 shows the changes in the unit diesel consumption compared
with that in the previous year. The red part shows the changes in the unit
diesel consumption caused by technological progress. The blue part dis-
plays the changes in the unit diesel consumption caused by changes in ma-
chinery quantity at different intervals (structural infl uence). It is obvious
that the effect of the technological progress plays a major role in almost all
agricultural machinery. It can be predicted that the trend will not change in
the foreseeable future. However, the effect of technological progress is no
longer signifi cant for some machinery with low unit diesel consumption,
such as farmland construction machinery.
Another way to reduce unit diesel consumption is to adjust the structure of
the distribution of agricultural machinery. Results show that most of the agri-
cultural machinery, such as tractors, harvesters, animal husbandry machinery,
fi shery machinery, transportation machinery and farmland construction ma-
chinery are becoming larger in size and lower in unit diesel consumption with
the development of the agricultural economy. This is not the case for irrigation
machinery, primary processing machinery and forestry machinery.
7.4.3 CHANGES OF UNIT PRODUCTIVITY
Table 3 shows the unit productivity of the four mechanized operations.
The unit productivity generally maintained a steady upward trend from
1996 to 2010:
 
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