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探讨了不同C/N的有机肥对油菜生物量、硝酸盐含量以及土壤EC的影响。结果表明:施用低量氮肥,增施M1能够增加油菜的生物量,硝酸盐含量无显著变化;增施M2、M3,能够降低油菜生物量和硝酸盐含量。当N用量为N0.067g kg-1土时(300kg hm-2),增施M1,油菜生物量和硝酸盐含量无显著变化;增施M2、M3时,显著降低生物量和硝酸盐含量。施用高氮肥,增施三种有机肥显著增加油菜生物量,硝酸盐含量无显著变化。三种不同C/N的有机肥在低量氮肥时对土壤EC的影响不显著,在高氮量时,增施M1能够增加土壤EC,增施M2、M3能够降低土壤EC。
Effects of different C / N organic fertilizers on rapeseed biomass, nitrate content and soil EC were discussed. The results showed that applying low amount of N fertilizer and increasing M1 could increase the biomass of rapeseed with no significant change of nitrate content. Adding M2 and M3 could reduce the biomass and nitrate content of rapeseed. There was no significant change in biomass and nitrate content of rapeseed with increasing M1 when applying N0.067g kg-1 soil (300kg hm-2). When M2 and M3 were added, biomass and nitrate content significantly decreased. Application of high nitrogen fertilizer, application of three kinds of organic manure significantly increased rape biomass, nitrate content no significant change. The effect of three different C / N organic fertilizers on soil EC was not significant when nitrogen was low, while increasing M1 could increase soil EC. When applying M2 and M3, soil EC could be decreased.