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Studies on Effects of NPK Fertilizer to Maize

Shoujuan Zhang

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Abstract

Field experiment of fertilizer effect was conducted in Jiaohe city,Jilin province.According to quadratic equation of three variables,the highest yield of 10 551.5 kg/hm2 will be reached when N-P2O5-K2O was 212.24-57.0-78.3(kg/hm2).The optimal fertilizer applied was 168.4-55.4-63.2 and yield was 10 432.7 kg/hm2.According to quadratic equation of one variable,the most fertilization N-P2O5-K2O was 212.1-67.0-64.0 kg/hm2 and the most economical fertilization N-P2O5-K2O was 184.1-63.0-60.3.

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What this paper is about

Field experiment of fertilizer effect was conducted in Jiaohe city,Jilin province.According to quadratic equation of three variables,the highest yield of 10 551.5 kg/hm2 will be reached when N-P2O5-K2O was 212.24-57.0-78.3(kg/hm2).The optimal fertilizer applied was 168.4-55.4-63.2 and yield was 10 432.7 kg/hm2.According to quadratic equation of one variable,the most fertilization N-P2O5-K2O was 212.1-67.0-64.0 kg/hm2 and the most economical fertilization N-P2O5-K2O was 184.1-63.0-60.3.

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Available abstract

Field experiment of fertilizer effect was conducted in Jiaohe city,Jilin province.According to quadratic equation of three variables,the highest yield of 10 551.5 kg/hm2 will be reached when N-P2O5-K2O was 212.24-57.0-78.3(kg/hm2).The optimal fertilizer applied was 168.4-55.4-63.2 and yield was 10 432.7 kg/hm2.According to quadratic equation of one variable,the most fertilization N-P2O5-K2O was 212.1-67.0-64.0 kg/hm2 and the most economical fertilization N-P2O5-K2O was 184.1-63.0-60.3.

Key concepts: Fertilizer, Human fertilization, Mathematics, Yield (engineering), Agronomy, Quadratic model, Animal science, Statistics

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