摘要
本研究采用系统分析和灰色理论,从河横村农业生态系统的能量、物流和价值流出发,分析了河横村农业生态系统的功能特征。结果表明,由于生态农业的发展,河横村农业生态系统的功能已朝着良性循环的方向发展。总能量产投比已达2.5以上,土壤子系统中的营养物质也出现了盈额,N1.76kg/亩,P_2O_53.43kg/亩,K_2O0.53kg/亩;各个子系统的经济效益也得到了提高,种植业、副业和渔业收入的灰色模型发展指数分别为-0.043,-0.214和-0.251。根据复合关联度分析,提出了河横村农业生态系统良性循环的对策为:在强化和完善生态农业措施的基础上,特别要注意充分利用光热资源,增加农业投资,强化劳力素质,加强有机肥的开发和利用。
This article applied the systematic analysis and Grey Theory, through the energy flow, the material flow and the capital flow, analysep the function characteristics of the agroecosystem in Heheng Village.The results demonstrated that owing to tse development of ecollogical agriculture, the function of the said agroecosystem has been entered the rational cycles . Total input-output energy ratio has been arrived above 2.5? nurture materials in the soil sub-system are also emerged surplus: N 1.76 kg/mu, P2O5 3.43 kg/mu, K2O 0.53 kg/mu; the economic benefit of each sub-system is also enhanced, the Grey Model tendency index of the benefits in agriculture, husbandry and fishing are -0.043, -0.214 and -0.251 respectively. According to ana lyses of complicated relation grade, the authors proposed the countermeasures of the agroecosystem in Heheng Village, in addition to basing on the atrengthening and improving the relevant measures of the ecological agriculture, it must be utilized the sun-light and warm resources fully, increased the input of agriculture, improved the quality of labor force, strengthened the obtain and utilization of the organic manure.
出处
《农村生态环境》
CSCD
1990年第3期19-24,共6页
Rural Eco-Environment
