关键词: 养分投入量, 养分投入量, 播量, 间作, 边界线分析法, 限制因子

Abstract: In this research, based on the survey data from thirteen national-level poverty-stricken counties of Lvliang City, for the agricultural economy poverty as the point of penetration, we use the principal component analysis to evaluate the status of agricultural economy development from 2007 to 2014. We also discussed the characteristics of spatial and temporal distribution of agricultural economy development. The results showed that: in Lvliang District, agricultural machineries and chemical fertilizer were overused. This induced environmental degradation in the soil. Then the poverty in this District was aggravated. The development of agricultural economy showed a trend of increment first and then decrement at the spatial scale in this District. The small values were in the northeast and southeast of this District. The great values were in the central of this District. The status of agricultural economy development was better in the middle parts of this district. These results are wished to be referred by studies on changes of future environment quality and on development of agricultural economy at poor areas in Shanxi Province.