豆科綠肥農地永續性利用之研究

Abstract

氮肥對不同耕作模式之水稻台梗8 號之產量影響，以綠肥輪作之水稻對氮肥的利用效率高，綠肥輪作之一期水稻施用每公頃800 公斤氮肥，其稻穀產量每公頃6918 公斤，明顯高於水稻連作之一期水稻產量，其增產指數為17.3%。綠肥輪作之二期水稻施用每公頃800 公斤氮肥，其稻穀產量每公頃6439 公斤，明顯高於水稻連作之二期水稻產量，其增產指數為7.7%。 The first model of rotation system is the rice applied 800 kg/ha ammonium sulphate as base fertilizer in first cropping and green manure (soybean) in the second cropping. The second model of rotation system is the rice applied 800 kg/ha ammonium sulphate as base fertilizer in second cropping and green manure (soybean) in the first cropping. The check model of rotation system is the rice applied 800 kg/ha ammonium sulphate as base fertilizer in first cropping and second cropping. The result showed that the grain yield (6918 kg/ha ) of the first model was 17.3 % higher than that of the check model. The grain yield (6439 kg/ha ) of the second model was 7.7 % higher than that of the check model.