Study on the Goal and Plan to achieve it for Consolidation of Rural Environment as the Secondary Nature

前现代时期，乡村人类活动与乡村环境作为第二自然存在共生关系。虽然随着人类活动的现代化，这种共生关系迅速被打破，但本研究从有关前现代时期栃木县水稻种植活动的老年农民的听力数据中提取了共生关系的主要结构。因此，本文以1950年以前与区域环境密切共生的人类活动为样本，重新研究了1950年以前的栃木县水稻种植活动，通过对当时实际从事水稻种植活动的老农进行访谈调查，另一方面，通过实地调查和与栃木县农业研究推广中心研究人员的讨论，已经记录了与区域环境失去共生关系的水稻种植活动。然后，从后石油时代可持续工程的合理条件的角度，对前现代和现代的水稻生产活动的各个要素进行了评价，并将评价为正的要素的保持和评价为负的要素的交替的结合理解为真实的后现代的部分人类活动的适当的水稻生产活动。人们的理解是，只有在假设某些基于生物量资源的新能源工程的情况下，才有可能重建这种充分的人类活动。

There was the symbiosis between the rural human activities and rural environment as secondary nature in pre-modern time. Although such symbiosis was broken rapidly according to the modernization in human activities now, Principal structure of the symbiosis was extracted from hearing data from old farmers about rice growing activities in Tochigi prefecture in pre-modern time in this research.Thus, rice growing activities in Tochigi prefecture before 1950 as a sample of the human activities which had tight symbiosis with regional environment was re-built through interview survey to old farmers who ware actually doing rice growing activities at that time. Other hand, present rice growing activities which is losing symbiosis with regional environment already was recorded by mean of both of field survey and discussion with researchers of Tochigi agricultural research extension center. Then, each element of rice growing activities of both of pre-modern time and modern time ware evaluated from view points of reasonable conditions of sustainable engineering in post petrol era, and the combination of conservation of the elements which evaluated as plus, and alternation of the elements which evaluated as minus was understood as adequate rice growing activities as a partial human activities at real post modern era.As the results, it was understood that the re-building of such adequate human activities are only possible on the assumption of some new energy engineering based on biomass resources.