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2007年采用不同的氮管理模式,在孕穗期、齐穗期及齐穗后15 d,对超级稻两优293进行根系活力测定。结果表明:不同的氮管理模式(FFP:农民习惯施肥模式,SSNM:实地氮管理模式,RTNM:实时氮管理模式)中,以采用SSNM模式和RTNM模式处理的根系活力最强,它们与同等氮施用量的FFP模式相比,其根系活力差异均达到显著水平;同样,相同氮施用量处理,采用不同氮管理模式,其产量也有显著差异。
In 2007, different nitrogen management modes were adopted. Root vigor of super rice Liangyou 293 was determined at booting stage, heading stage and 15 days after heading stage. The results showed that the root activity of SSRM and RTNM was the highest among the different N management modes (FFP: peasant habitat fertilization, SSNM: real-time nitrogen management, RTNM: real-time nitrogen management) Compared with the FFP model, the differences in root activity were all significant. Similarly, with the same amount of nitrogen application, different nitrogen management modes were used, and the yields of these two nitrogen fertilizers were also significantly different.