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[1]HU Jian-jun,ZHANG Yue-qin,WEN Xue-fei,et al.Study on the Effects of Nitrogen,Phosphorus and Potassium on Corn Based on ‘3414’ Model in Yanchi County[J].Research of Soil and Water Conservation,2011,18(04):268-272.

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Study on the Effects of Nitrogen,Phosphorus and Potassium on Corn Based on ‘3414’ Model in Yanchi County

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 268-272 Column: Public date: 2011-08-20

Title:: Study on the Effects of Nitrogen,Phosphorus and Potassium on Corn Based on ‘3414’ Model in Yanchi County

Author(s):: HU Jian-jun¹, ZHANG Yue-qin¹, WEN Xue-fei², GUO Bao¹, ZHANG Hong¹, ZHAO Xiu-ling¹; 1. Center forTechnology Extension and Service, Yanchi Agro-pastoral Bureau, Yanchi, Ningxia 751500, China;
2. Institute of Desertification Control, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China

Keywords:: corn fertilizer effect; soil testing and fertilizer recommendation; optimum amount of fertilization

CLC:: S513;S506.2

DOI:: -

Abstract:: In this study, a ‘3414’ experiment of corn has been arranged on a representative soil type in Yanchi County. The results showed that the soil was middle fertility and the contribution of land capability reached 54.84%. The effect of NPK on corn yield was N>P>K. Nitrogen had the most significant effect on yield, and the yield increasing effect of pure nitrogen (240 kg/hm²) reached 2 751.45 kg/hm²;the yield increasing effect of pure phosphorus (120 kg/hm²) reached 1 023.45 kg/hm²;and the yield increasing effect of pure potassium (75 kg/hm²) reached 236.7 kg/hm². The most influential effect on corn yield was the interaction of N and P in the interaction among different fertilizers, and the order of significance of interaction effects was N×P>N×K>P×K. When the corn yield reached 7 652.23 kg/hm², it needed pure N (360 kg/hm²), pure P (107.81 kg/hm²) and pure K (4.30 kg/hm²). Fertilization effect model of corn was a three variables power two polynomial regression model, which reached an extremely significant level and could provide suggestions for corn production.

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