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2013•Hubei nongye kexueRequires access

Effects of Mixed Application of N,P,K Fertilizers on the Yield of Super Rice

Wang Ben-f

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Abstract

Effects of N,P,K balanced fertilization on the yield of super rice were studied, with 3414 the optimum regres- sion design. The single factor and interaction effects of N,P,K fertilizer were explored. The results showed that N,P,K appli- cation could improve the yield of rice. The yield of whole application was significantly higher than either of them. The agro- nomic efficiency of three kinds of fertilizers increased at first and then decreased with the increase of the amount of fertiliza- tion. The interactions among N,P,K application had significant effects on rice yield, with the order of NPNKPK. According to the imitative results of regression equation, the optimal application rate of N,P2 O5 and K2 O were 158.55 kg / hm2,62.25 kg / hm2and 58.35 kg / hm2,respectively. The highest economic yield was 9 451.05 kg / hm2.

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Effects of N,P,K balanced fertilization on the yield of super rice were studied, with 3414 the optimum regres- sion design. The single factor and interaction effects of N,P,K fertilizer were explored. The results showed that N,P,K appli- cation could improve the yield of rice. The yield of whole application was significantly higher than either of them. The agro- nomic efficiency of three kinds of fertilizers increased at first and then decreased with the increase of the amount of fertiliza- tion. The interactions among N,P,K application had significant effects on rice yield, with the order of NPNKPK. According to the imitative results of regression equation, the optimal application rate of N,P2 O5 and K2 O were 158.55 kg / hm2,62.25 kg / hm2and 58.35 kg / hm2,respectively. The highest economic yield was 9 451.05 kg / hm2.

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Available abstract

Effects of N,P,K balanced fertilization on the yield of super rice were studied, with 3414 the optimum regres- sion design. The single factor and interaction effects of N,P,K fertilizer were explored. The results showed that N,P,K appli- cation could improve the yield of rice. The yield of whole application was significantly higher than either of them. The agro- nomic efficiency of three kinds of fertilizers increased at first and then decreased with the increase of the amount of fertiliza- tion. The interactions among N,P,K application had significant effects on rice yield, with the order of NPNKPK. According to the imitative results of regression equation, the optimal application rate of N,P2 O5 and K2 O were 158.55 kg / hm2,62.25 kg / hm2and 58.35 kg / hm2,respectively. The highest economic yield was 9 451.05 kg / hm2.

Key concepts: Yield (engineering), Fertilizer, Mathematics, Human fertilization, Interaction, Chemistry, Agronomy, Animal science

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