Effects of Different Planting Density and Fertilization Levels on Yield of Maize Variety"Qinghong No.509"
[Objective]The effects of different planting densities and fertilization levels on yield of maize variety"Qinghong No.509"were studied in order to provide theoretical basis and guidance for high yield and high efficiency of maize.[Method]In this experiment,the maize variety"Qinghong No.509"was applied as the material to study the effects of different fertilization levels and planting density on the agronomic traits and yield of maize varieties.The experiment adopted the two-factor split-plot design,and the main plot density factor A was set as a total of 3 levels,namely A1(2800 plants/667m2),A2(3200 plants/667m2)and A3(3600 plants/667m2).The fertilization factor B in the sub-area were set as four different fertilization treatments,namely B1(base fertilizer compound fertilizer 25 kg/667m2,top fertilizer compound fertilizer 25 kg/66m2+ urea 10kg/667m2),B2(one-time slow-release controlled fertilizer 40 kg/667m2),B3(one-time slow-release controlled fertilizer 50 kg/667m2).B4(one-time slow-release controlled fertilizer 60 kg/667m2).[Result]The results showed that under the same fertilization level,the highest yield was obtained when the planting density was A1(2800 plants/667m2).Under the one-time fertilization treatment,B4(one-time slow-release controlled fertilizer 60 kg/667m2)fertilization level reached the maximum value.[Conclusion]The planting density,fertilization level and fertilizer-density interaction had significant effects on maize yield.The suitable planting density of"Qinghong No.509"in Youjiang District of Baise City is 2800 plants/667m2.The high-yield cultivation and fertilization measures should be the application of Maoshi brand one-time slow-release controlled fertilizer(N∶P2O5∶K2O=28∶11∶12)60 kg/667m2,and the yield of maize is the highest,reaching more than 700 kg/667m2,which is more in line with the targeting of high-yield and high-efficiency cultivation of maize variety"Qinghong No.509".
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