论文部分内容阅读
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。
In this study, the system analysis and gray theory, from the river Hengcun agroecosystem energy, logistics and value flow starting from the analysis of river Hengcun agro-ecosystem function characteristics. The results show that due to the development of eco-agriculture, the function of agro-ecosystem in Heheng Village has been moving toward a virtuous circle. Total energy production and investment ratio has reached more than 2.5, the soil subsystems also showed a surplus of nutrients, N1.76kg / mu, P_2O_53.43kg / mu, K_2O0.53kg / mu; the economic benefits of each subsystem have also been The gray model development indices for raising, planting, sideline and fishery revenues were -0.043, -0.214 and -0.251, respectively. According to the analysis of compound correlation degree, the countermeasure of virtuous cycle of He Heng village eco-system is as follows: on the basis of strengthening and perfecting eco-agriculture measures, paying special attention to making full use of light and heat resources, increasing agricultural investment, strengthening labor quality, strengthening organic fertilizer Development and utilization.