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失地农民问题是我国工业化和城镇化过程中必须逾越的障碍。当前解决这一问题的保障政策设计只能解决失地农民的生存而不能解决失地农民的发展,从而使失地农民问题解而不决。彻底解决失地农民问题必须实施蜕变政策,使失地农民成长为新型农民。蜕变政策不仅具有独特的效用,而且具有现实可行性。 相似文献
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Angela R. Piergiovanni Giovanni Taranto Francesco P. Losavio Domenico Pignone 《Genetic Resources and Crop Evolution》2006,53(2):313-322
Marginal areas of Central Italy, i.e., areas where socio-economic conditions are weak and agriculture is carried on with traditional
farming methods, are known to retain highly interesting local legume populations. The variation within a collection constituted
by 44 populations belonging to 19 common bean (Phaseolus vulgaris L.) landraces, recently collected in Central Italy, was studied. Most landraces from the Lazio region were collected in the
inner valleys of Aniene river basin, those from the Abruzzo region were collected in the Valley Peligna and the basin of the
Aterno–Pescara river. Some morphological traits of plant and seeds and the phaseolin pattern were analysed to evaluate the
degree of genetic variation among and within the landraces. Both common bean gene pools were represented in the investigated
collection, the populations belonging to Andean gene pool were predominant. The landraces ‘Cioncone’, from Lazio and ‘Fagiolo
pane aquilano’, from Abruzzo showed the rare A phaseolin type. All the collected data were submitted to cluster analysis.
Two main subgroups were identified, the former included mainly populations from Abruzzo region and the latter including all
the others. Despite this, a considerable resemblance exists between the common bean landraces from Abruzzo and Lazio, as proved
by the low rankings on the tree among the populations. The observed similarity is discussed also on the basis of historical
relationships between the two sides of the Apennine ridge.
Contribution n. 40 from Institute of Plant Genetics-CNR, Bari, Italy. 相似文献
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本文以安徽新华学院物流工程专业为例,结合其专业特点及应用型人才培养要求,构建基于本科生导师制视域下的物流工程专业创新创业教育体系,并提出优化创新创业教育课程体系结构、打造良好教育师资、建立有效的师生奖惩机制等方面的保障措施。 相似文献
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