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黄土丘陵区山地立体种养循环生产能流 特征与经济效益分析
王钰1; 吴发启2; 彭小瑜1; 佟小刚2
2016
Source Publication农业工程学报
Volume32Issue:2Pages:199-206
Abstract

为揭示陕北黄土丘陵区典型循环农业生产模式的功能和效益,研究以宜君县山地立体种养结合循环生产模式为
例,分析了该循环生产模式的能量流动和经济效益特征。结果表明:山地立体种养结合模式的有机能/无机能比达到46.2,
是传统种植模式的92 倍;种养结合模式和传统模式的能流密度分别为19.7,7.0 MJ/(m2·a)。种养结合模式的系统内依存
度为37.4%,远高于传统模式,显示出较强的系统自我维持能力和稳定性。种养结合模式的能量产投比为1.07,略小于
传统模式的1.14,但其成本利润率、年均收益率和经济产投比分别达到137.6%、4.6%和2.4,均高于传统模式的81%、
2.7%和1.8;种养结合模式和传统模式的投资回收期分别为4 年和7 年。综上,山地立体种养结合模式能够有效地利用系
统废弃物,提高能量利用效率,表现出良好的经济效益和较强的抵抗经济风险的能力,在该丘陵区具有良好的推广价值。

Other Abstract

As the foundation of the national economy industry, agriculture is facing the increasingly prominent resource
constraints and environmental problems. At present, the development of agriculture in China has been mainly based on an
extensive predatory mode of operation with one-way flow of resources, agricultural products, and wastes. Conventional
production systems are characterized by high resource consumption, low material and energy utilization rates, and considerable
pollutant emissions. Due to excess input of pesticides, fertilizers, and energy and food safety issues, the conventional
production model has resulted in the exhaustion of agricultural resources such as water, land, and energy, destroying the
eco-environment. While circular agriculture is a kind of new mode of agricultural development with the features of
environmental friendly, economical and feasible. The use of ecological recycling in agriculture has been widely spread in
China. Taking a circular integrated agriculture model in the Loess Plateau consisting of multiple subsystems (walnut and grain,
pigs and poultry, and biogas) as a case, the energy flow feature and economic benefit were compared with the traditional
agriculture model, to direct the development of agriculture in the Loess Plateau. The data of the study came from the
investigation on the circular agriculture, field sampling and experimental analysis. By using method of flow analysis and cash
flow analysis, some results were obtained as following. The indices of energy flow and economic benefit of the integrated
agriculture model were superior to the traditional agriculture model. The operation of the integrated agriculture model
imported more energy, which mainly was organic energy. The indicator of organic/inorganic energy of the integrated
agriculture model was 46.2, which was 92 times of the traditional agriculture model. And its energy flow density was 2.7 times
of the traditional agriculture model (7.0 MJ/(m2·a)), which was 19.7 MJ/(m2·a).The indicators of energy circulation index,
system dependence and efficiency of solar energy utilization were 0.98, 37.4% and 0.5%. While, due to the complex structure
of the integrated agriculture model, the energy input-output ratio was lower comparedto the traditional agriculture model. The
energy yield of biogas subsystem was low, and the biogas subsystem need to be improved to enhance the energy production of
the whole mode. The result of economic benefit showed that the total cost, total revenue and total net present value were higher
than those in the traditional agriculture model. And the cost profit margin, the annual average yield and economic ratio of the
integrated agriculture model reached 137.6%, 4.6%, and 2.4. The cumulative net cash flow of the integrated production mode
in Yijun began to showpositive effect from the fifth year and its investment recovery period was 4 years, and it showed that the
traditional agriculture mode need longer time to recover the principal, so the investment risk is higher for the traditional
agriculture mode. To sum up, the integrated agriculture model can effectively use the waste produced in the system, improve
the efficiency of energy utilization, show better capability of producing benefit and enduring economic risks, for which it must
have a good popularization value in the hilly region.

Keyword农业 经济效益 模式 黄土丘陵区 循环农业 种养结合生产 能流
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8598
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所
2.西北农林科技大学资源环境学院
Recommended Citation
GB/T 7714
王钰,吴发启,彭小瑜,等. 黄土丘陵区山地立体种养循环生产能流 特征与经济效益分析[J]. 农业工程学报,2016,32(2):199-206.
APA 王钰,吴发启,彭小瑜,&佟小刚.(2016).黄土丘陵区山地立体种养循环生产能流 特征与经济效益分析.农业工程学报,32(2),199-206.
MLA 王钰,et al."黄土丘陵区山地立体种养循环生产能流 特征与经济效益分析".农业工程学报 32.2(2016):199-206.
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