Abstract
The equations showing the relations between the air temperature and the sowing-time (S) and harvest-time (H) of crops (rice plant, winter wheat and barley) at any locality are as follows; where T is the sum of the monthly mean air temperature from May to September and TA is the annual mean of the air temperature and TL is the monthly mean of the minimum air temperature.
The theoretical sowing-and harvest-times in Japan Proper and Manchoukuo, which are calculated from the equations given above, are shown in fig. 1-7, which may be useful to find the propertime of sowing and harvest at a newly cultivated locality.
