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对江苏省80年代农业化石能投入及其效益分析表明,农业化石能投入在社会能源消费中所占比重呈下降趋势(1980年为21.05％,1990年为15.23％),农业化石能投入总量平均年递增6.35％(1990年耕地投能密度为63.76×10~9J/ha),主产品能量平均年递增2.91％(1990年耕地能量产出密度为107.96×10~9J/ha),能量产投比呈下降趋势(由2.35降至1.69)。本文还建立了能量投入和产出回归模型。通过预测,若要保持人均粮食占有量500kg,1995年和2000年江苏省农业化石能投入总量要比1990年分别增加5.86％和21.93％。
The analysis of agricultural fossil energy inputs and their benefits in Jiangsu Province in the 1980s shows that the proportion of agricultural fossil energy input in the social energy consumption shows a downward trend (21.05% in 1980 and 15.23% in 1990), and the total input of agricultural fossils Average annual increase of 6.35% (in 1990, the energy density of cultivated land was 63.76 × 10 ~ 9J / ha), the average annual increase of main product energy was 2.91% (output density of cultivated land in 1990 was 107.96 × 10 ~ 9J / ha), energy The production-to-output ratio has been declining (from 2.35 to 1.69). This article also established the energy input and output regression model. By forecasting, in order to maintain a per capita food supply of 500kg, the total input of fossil fuels in Jiangsu Province in 1995 and 2000 will increase by 5.86% and 21.93% respectively over that in 1990.