One of the greatest problems of contemporary agriculture in Japan is how to maintain and develop food production. Strategies for sustaining and developing agriculture in Japan are discussed based on 10 previous sample studies that address sustainable farm management representing each district of Japan. The sample studies are on urban agriculture in the western suburbs of Tokyo, rice farming in Hokuriku, field crop farming in Tokachi, double cropping with rice and field crops in Saga, greenhouse farming in Atsumi, fruit farming in Kofu, high-quality beef production in Oshu City, combining vegetable growing with its processing and shipping in Akagi, cabbage growing in Asama, and combining vegetable growing and sales at farm product shops in Hiruzen. The main elements of strategies for sustainable farm management are (1) ensuring capable farm operators, their successors, and farm laborers, (2) building up rational farm management by promoting large-scale or intensified farm operation with advanced technology, machines, and facilities, (3) keeping stable income sources including those both from farm products and non-farm jobs, (4) establishing multiple channels for shipping farm products, and (5) forming networks between producers and consumers. The previous sample studies suggest that locational, physical, economic, social, cultural, and political conditions play an important role in the sustainable development of agriculture and rural regions. Among these, accessibility to large cities, which are the main markets for farm products, favorable physical conditions for farm production, and suitable political conditions are important. Capable and good farm operators establishing efficient farm management and leading rural communities are especially needed to maintain and develop agriculture utilizing their locational and physical conditions. We need to respond to regional differences in order to identify sustainable and viable types of agriculture in Japan.

成するには，山村に固有な農業，林業の振興に取り組むことが必要である．The purpose of this paper is to report the present conditions of the mountain villages in Japan and to offer viewpoints for regional policy. The traditional mountain village societies in Japan are rapidly aging because the industries that have historically supported these villages -namely agriculture and forestry -are no longer relevant. The government increased taxes for supporting mountain villages in order to fund the constructions of roads and infrastructure projects for the region since 1970. However, the revenue from the increased taxes was negatively offset by the continuing decrease in population of the region, therefore the funds were not effective. My proposal to halt the economic recession of mountain villages is to promote the forestry and agriculture industries directly through inh abitants of urban areas. This would include strategies and programs set up to enable the mountain villages to sell and to distribute their products directly to urban regions.キーワード： 山村，山間集落，高齢化，地域政策，群馬県

Using a sample village in the southeastern part of the Kofu Basin in Yamanashi Prefecture, Central Japan, the characteristics of fruit farming and its sustainability are studied through an analysis of farm management. There were 68 households in the sample village, 44 of which were engaged in farming in 2017. Traditional rice farming and silkworm production were replaced by peach and grape growing in the mid-1960s and reached peak productivity in the 1990s. Full-time farmers could enjoy high profits and elderly or part-time farmers could also generate sufficient household income to live comfortably. Although the profitability of fruit growing has decreased slightly since then, even at present most full-time farmers receive a large income from fruit growing. Based on the structure of the farming workforce comprising family members and their main sources of income, 44 farm households are classified as full-time farmers, former salariedworkers-turned-farmers, part-time farmers, or elderly farmers. There are 17 full-time farmer households with at least two family members involved in farming. They receive a large income from shipping their farm products directly to supermarkets, hotels, consumer cooperatives, contractors, or individual customers by courier. Nine former salaried-workers-turned-farmer households are managed by a husband who retired from a full-time urban job and his wife. In addition, there are seven part-time farmer and 11 elderly farmer households. The former salariedworkers-turned farmer, part-time farmer and elderly farmer households with a declining labor base ship their fruit to market through an agricultural cooperative. The convenience of the agricultural cooperative is important in supporting the survival of fruit farming. The increase in the size of operations of full-time farmer households is supported by land leased from other farmer households. The renting and leasing relationships between full-time and the other farmers help to promote fruit farming and to preserve the rural landscape in this area. Based on the field survey, the total number of farm households is estimated to decrease to 39 by 2027. These include 15 full-time farmer, 11 former salaried-workers-turned-farmer, five part-time farmer and eight elderly farmer households. The present situation of high-profit fruit farming may be maintained for another ten years. However, at that time most farmers will be at least in their late sixties, and if there are not enough successors, this area is facing the danger of a sudden collapse of fruit growing. Full-time farmer households will play an important role in sustaining fruit farming in this area, but at present only four of these households have two generations of family

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