However , there are some problems in the diversified practice of some groups due to the misunderstanding about diversification . for example , blind diversification is carried out before scale economy achieved in main industry ; too many industries are engaged in owing to overemphasis on diversification , etc . as the result , groups met with difficulties , even went bankruptcy because they diversify improperly 多元化经营战略对于企业集团的发展做出了巨大贡献，但由于对多元化经营战略存在认识上的误区，在实践中还存在着种种问题，例如，主业还没有形成规模经济时就盲目多元化经营、过分强调多元化经营导致经营领域过于宽泛等等。
While studying the county land economy of our country , this text uses the comparative analytic approach and analytic approach of cause and effect to draw questions and reasons existing in the county land economic development of the central and west regions of our country which show concretely as follows : the economic development level lags behind , the industrial structure melts elementarily , the level of consumption is on the low side , the urbanization level is not high , overall technology is poor , the market development degree is low , the traffic infrastructure is bad , the culture and education hygiene industry lags behind , the social overall development degree is bad , etc 在研究区域经济时，重点剖析了区域经济的基本概念、基本特点、基本理论和发展趋势。在研究我国县域经济时，运用比较分析法及因果分析法得出了我国中西部地区的县域经济发展中存在的问题及原因，具体表现在：经济发展水平滞后、产业结构初级化、消费水平偏低、城市化水平不高、总体技术水平低、市场发育程度低、交通基础设施差、文教卫生事业落后、社会总体发育程度不良等。
