Agriculture Reference
In-Depth Information
(17)
The other effect coeffi cient oec mainly works on the load factor lf men-
tioned in the Main Module. The other effect coeffi cient oec means that
the load factor is not proportional to machinery power in unit area any
longer. In short, we can conclude that technological progress leads to the
reduction of average unit consumption and changes in working hours re-
sult from the changes in unit productivity and load factor.
7.3 DATA SOURCES
The data related to the agricultural land, machinery and energy consump-
tion in this paper are mainly obtained from the China Statistical Yearbook
[17], China Energy Statistical Yearbook [18], China Rural Statistical Year-
book [19] and China Agriculture Statistical Report [20]. The first three
data resources are published by the National Bureau of Statistics of China
and the last one is published by the Ministry of Agriculture of China.
The data related to land and water resources in this paper are given
by the China Land and Resources Bulletin [21] and the China Water Re-
sources Bulletin [22]. The former is published by the Ministry of Land
and Resources of China, and its data, especially the farmland area data,
are more reliable than the other data sources [23]. The latter is published
by the Ministry of Water Resources of China.
Table A1 in the Appendix presents the workload statistics of four op-
erations: i.e., mechanized tillage, mechanized sowing, mechanized har-
vesting and mechanized irrigation. Considering that parts of the land are
repeatedly cultivated in a year, a re-seeding coeffi cient (the ratio of sowing
area to tillage area) is introduced to correct the workload statistic of the
mechanized tillage when the data are input into the model. Table A2 pres-
ents the number and the total power of the agricultural machinery men-
tioned in this study.
