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2008•Zhongguo youliao zuowu xuebaoRequires access

Study on the effects of NPK fertilizers and optimum fertilizer rate on direct-seeding rapeseed

Fang Chen

Open publisher page 3 citations

Abstract

Based on the 3414 fertilizer experiment protocol, a field experiment was conducted to study effects of NPK fertilizers and optimum fertilizer rate on direct-seeding rapeseed. The results showed that the coordinated application of nitrogen, phosphorous and potassium increased the yield of rapeseed significantly, and their effect on the yield of rapeseed could be ranked as NKP;nutrient content and uptake of organs for rapeseed was improved with the application of the corresponding nutrient; the most effective combination utilized N 35.1%, P 23.1% and K 73.9% when applied N 180, P2O5 30 and K2O 90 kg/hm2 respectively. According to univariate quadratic model, the most appropriate fertilization for direct-seeding rapeseed was N 212 kg/hm2、P2O5 23 kg/hm2 and K2O 112 kg/hm2,respectively.

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What this paper is about

Based on the 3414 fertilizer experiment protocol, a field experiment was conducted to study effects of NPK fertilizers and optimum fertilizer rate on direct-seeding rapeseed. The results showed that the coordinated application of nitrogen, phosphorous and potassium increased the yield of rapeseed significantly, and their effect on the yield of rapeseed could be ranked as NKP;nutrient content and uptake of organs for rapeseed was improved with the application of the corresponding nutrient; the most effective combination utilized N 35.1%, P 23.1% and K 73.9% when applied N 180, P2O5 30 and K2O 90 kg/hm2 respectively. According to univariate quadratic model, the most appropriate fertilization for direct-seeding rapeseed was N 212 kg/hm2、P2O5 23 kg/hm2 and K2O 112 kg/hm2,respectively.

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Available abstract

Based on the 3414 fertilizer experiment protocol, a field experiment was conducted to study effects of NPK fertilizers and optimum fertilizer rate on direct-seeding rapeseed. The results showed that the coordinated application of nitrogen, phosphorous and potassium increased the yield of rapeseed significantly, and their effect on the yield of rapeseed could be ranked as NKP;nutrient content and uptake of organs for rapeseed was improved with the application of the corresponding nutrient; the most effective combination utilized N 35.1%, P 23.1% and K 73.9% when applied N 180, P2O5 30 and K2O 90 kg/hm2 respectively. According to univariate quadratic model, the most appropriate fertilization for direct-seeding rapeseed was N 212 kg/hm2、P2O5 23 kg/hm2 and K2O 112 kg/hm2,respectively.

Key concepts: Rapeseed, Seeding, Fertilizer, Human fertilization, Potash, Agronomy, Hectare, Potassium

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