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以晋东豫西旱农试验区——山西省寿阳县宗艾镇宗艾村农业生态系统为研究对象,分析了农田、果园、林业和畜牧业等亚系统能量流动途径、人工辅助能输入、能量产出、能量结构偏差以及能量转化效率等能流特征。结果表明:(1)由于能量投入低,尽管利用效率较高,但能量产出仍处于低水平阶段。农田生态系统的有机能投入和人工辅助能总投入很低,低于1979年全国平均水平,但能量产投比较高。增加人工辅助能投入、提高有机能投入比例和降低无机能投入比例,能够提高能量产出和能量利用效率。(2)初级生产和次级生产系统之间的能量结构偏差很大,初级生产所提供的生物能浪费严重。大力发展畜牧业是协调初级生产和次级生产系统之间关系、提高整个系统能量产出的一条有效途径。
Taking Jin Dong Arid-Arid Experimental Zone - Zongyi Village of Zongyi Town, Shouyang County, Shanxi Province as the research object, the ways of energy flow in sub-system such as farmland, orchard, forestry and animal husbandry were analyzed. , Energy output, energy structure deviation and energy conversion efficiency. The results show that: (1) Due to low energy input, energy output is still at a low level despite high utilization efficiency. The total input of organic input and labor support for farmland ecosystems can be very low, lower than the national average in 1979, but higher in energy production and investment. Increasing the number of man-made aids to invest in, increasing the proportion of organic inputs and reducing the proportion of inorganic inputs can increase energy output and energy efficiency. (2) The energy structure between the primary and secondary production systems is highly variable and the bioenergy provided by primary production is wasted. Vigorously developing animal husbandry is an effective way to coordinate the relationship between primary production and secondary production systems and increase the energy output of the entire system.