氮肥运筹对‘沪油杂1号’生长影响初探

摘要

在不同氮肥施用量、氮肥施用比例下对杂交双低油菜品种‘沪油杂1号,进行了小区试验.结果表明:‘沪油杂1号’氮肥适宜施用量270～300 kg/hm2；在氮肥施用量270 kg/hm2时,年前、年后氮肥施用比例应为6.5～7.0∶3.5～3.0.%A plot experiment with double low rape cultivar ‘ Huyouza 1' was carried out at various nitrogen fertilizer rates and ratios.The results showed that the suitable nitrogen fertilizer rate was 270-300 kg/hm2,and when the application rate of nitrogen fertilizer was 270 kg/hm2 the suitable nitrogen fertilizer ratio before and after the year was 6.5-7.0∶3.5-3.0.