남부지방 벼 2기작을 위한 적합품종 선정

This study was conducted to confirm the possibility of rice double cropping system in the southern region as the period of possible cultivation of rice is prolonged due to recent global warming. The first rice was transplanted with 9 varieties on April 15th. After the first rice was harvested, the second rice was transplanted on August 1st with 11 varieties and harvested in early November. The five preceding crop varieties (Girara 397, Baek Ilmi, Joan, Hanseol, and Jungmo 1031) were harvested in late July. The highest yield of first transplanting rice was on the Girara 397 and Baekilmi varieties. The first transplanting rice yield was approximately 93% of the local average. Zinoc and Girara 397 had the highest quantity in the second transplanted varieties of rice. Rice yield was less than around 70% of the average local yield in second transplanting rice cultivation because the growing period was shorter than that of normal seasonal cultivation. Thus, although the economic efficiency of the rice double cropping system in South Korea is not yet high, it is estimated that continuous research is required in view of the rise in the average temperature and food self-sufficiency rate due to global warming.