@article{oai:repository.naro.go.jp:00001659,
 author = {中野, 明正 and NAKANO, Akimasa and 上原, 洋一 and UEHARA, Yoichi},
 journal = {野菜茶業研究所研究報告, Bulletin of the National Institute of Vegetable and Tea Science},
 month = {Mar},
 note = {The correlation coefficient between δ^15N values of fruits and phosphate buffer extracted nitrogen from the soil (PEN) (R=0.931) was higher than the total nitrogen (R=0.692) in the tomato cultivated without fertilizer. This meant that the plant absorbed the easily digested PEN in the soil nitrogen. In some cases the origin of the PEN was unknown, that is on the first cultivation with organic fertilization or chemical fertilization, PEN affected the δ^15N values of the tomato making it difficult to identify the fertilization record by using δ^15N However in those cases, the amount and δ^15N value of PEN were determined, and the δ^15N values of the fruits were identified more precisely (R=0.896). These data were necessary to provide a more precise analytical method based on the fertilizer record identification.},
 pages = {1--7},
 title = {日本全国12試験地における化学および有機質肥料の施用がトマトの窒素安定同位体比に与える影響 : 栽培場所間の変動解析},
 volume = {7},
 year = {2008},
 yomi = {ナカノ, アキマサ and ウエハラ, ヨウイチ}
}