传统方法种植的有机番茄的氮同位素检测方法

Authentic samples of commercially produced organic and conventionally
grown tomatoes were collected and analysed for their 15N composition
in order to assemble datasets to establish if there were any stematic
differences in nitrogen isotope composition due to the method of
production. The tomato dataset show that the different types of fertiliser commonly used in organic and conventional systems result in differences in the nitrogen isotope composition of this crop. A mean 15N value of +8.1 was found for the organically grown tomatoes compared with a mean value of -0.1 for those grown conventionally.