近年来,我市稻套油菜面积逐年扩大,为进一步探讨稻套油菜高产栽培的需肥规律,特进行本试验。1材料与方法1.1供试品种“史力丰”。1.2试验设计采用三元二次通用旋转试验设计,试验因素及编码水平(见表1),小区面积20m2,随机排列,其中6个0水平中心点相互间隔均匀分布,试验结果(见表 In recent years, the area of ​​rice rapeseed in our city has been expanding year by year. In order to further investigate the law of fertilizer demand for high-yielding cultivation of rice rape, we conducted this experiment. 1 Materials and methods 1.1 test varieties “Shi Li Feng.” 1.2 Experimental Design Using three yuan two universal rotary test design, test factors and coding levels (see Table 1), the plot area of ​​20m2, randomly arranged, of which 6 0 horizontal center points evenly spaced from each other, the test results (see Table