Abstract
1. From my own opinion the main tropical crops include economical tropical crops as well as wellknown crops which are growing all over the warm countries in the Temperate, Sub-tropics and Tropics. 2. Mode of classification is to be as follows, the main tropical crops are divided, at first by use, in the second by Agricultural Administration, and in the third by the system of cultivated ion, ie. cultivation by Estate and Inhabitants. In this way, many main Tropical crops will be divided into the two classes. 3. As I showed above, I described about the mode of classification with 17 chapters of main tropical crops.
