Substantial study on a process of acceptance and diffusion of agriculture in the Far East analyzing millet, barley and wheat remains

研究受试者1;古坟时代之后的栽培植物组成发生了怎样的变化我们从九州地区的古代和中世纪遗址中，例如博多遗址，用漂浮法回收了植物的宏观遗骸。结果表明，8世纪以后，与水稻相比，谷子、大麦和小麦的数量迅速增加。这一现象，高比例的这些谷物在主食的组成是公认的持续到中世纪，16世纪的一个主要原因导致这一现象似乎是瘦收获的水稻发生了可怕的气候变化，全球变暖。此外，结合基因研究和考古学研究，推测渤海人传入的大麦品种中有一种是带壳大麦。日本列岛的植物栽培是如何开始的？为了解决这个问题，我们列出了史前日本、朝鲜、俄罗斯的栽培种子，和中国，并在发现碳14测年错误的基础上，提取了各地区栽培种的可靠成分。通过对它们的比较和过渡，将绳文栽培种分为两类，一类是在绳文中期之前开始栽培的栽培种，另一类是在绳文后期后半期之后开始栽培的栽培种。后者是从朝鲜半岛传入的新品种，含有水稻、大麦、谷子等，进一步研究，日本接受的时间可能早于此。这次最重要的发现是发现了名为“Kumadai”的绳纹大豆的印记，这是日本最古老的印记。随着更古老的例子的发现，我们认为大豆在中绳文开始在国内种植。

Subject 1 of study; How did a cultigens composition changed afterward the Kofun PeriodWe recovered plant macro-remains from the Ancient and Middle age sites in Kyushu region, for instance the Hakata Sites with floatation. As the results we recognized that rapid increasing of amount of millets, barley, and wheat comparing with rice afterward 8 century. The phenomenon, high proportion of these cereals in the composition of staple foods is recognized continuously until Middle age, 16 century A Main reason causes the phenomenon seems to be lean harvest of rice happened by terrible climatic change, global warming. Additionally, with a result of gene study and archaeological study we estimated that one type of hulled barley is introduced by Bo Hai peoples.Subject 2 of study ; How did a plant cultivation begin in Japan archipelagoIn order to solve the issue we listed up the cultigens seeds of prehistoric Japan, Korea, Russia, and China and finally extracted reliable compositions of cultigens in each region after finding faults of carbon 14 date. Comparing them and their transitions lead the result that cultigens in Jomon are divided into two categories, the one is cultigens which begin to be cultivated before the Middle Jomon and the other is ones which begin to be cultivated after the latter half of Late Jomon. The later are newcomers introduced from the Korean Peninsula contained rice, barley, foxtail millet With further study the acceptance time to Japan would be back to the earlier than that time. The most important find this time is a discovery of the impressions of Jomon Soybean named "Kumadai", which are the oldest ones in Japan. With a discovery of more older example we argued that the soybean began to be cultivated domestically at the Middle Jomon.