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Study on Potassium Effect and Potassium Use Efficiency of Wheat in Hubei Province

Xiaokun Li

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Abstract

Seventy field trials of potassium(K) fertilizer application to wheat were conducted in Hubei province.The effect of K fertilization on yield,profit of wheat,and K use efficiency of wheat in Hubei province were studied.The results showed that K application promoted both the yield and profit of wheat significantly.The average yield increment with K fertilization was 556～978 kg/hm2 and the increasing rate was 9.5%～16.7%.Compared to the control(no K treatment),profit of K application increased 192～897 yuan/hm2 and the value cost ratio(VCR) averaged 1.2～4.7.The partial factor productivity of applied K(PFPK) and agronomic K use efficiency(AEK) averaged 71.0 and 7.4 kg/kg K2O,respectively.According to linear plus platform model,the average optimum K application rate was 87 kg K2O/hm2 for wheat in Hubei province.

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What this paper is about

Seventy field trials of potassium(K) fertilizer application to wheat were conducted in Hubei province.The effect of K fertilization on yield,profit of wheat,and K use efficiency of wheat in Hubei province were studied.The results showed that K application promoted both the yield and profit of wheat significantly.The average yield increment with K fertilization was 556～978 kg/hm2 and the increasing rate was 9.5%～16.7%.Compared to the control(no K treatment),profit of K application increased 192～897 yuan/hm2 and the value cost ratio(VCR) averaged 1.2～4.7.The partial factor productivity of applied K(PFPK) and agronomic K use efficiency(AEK) averaged 71.0 and 7.4 kg/kg K2O,respectively.According to linear plus platform model,the average optimum K application rate was 87 kg K2O/hm2 for wheat in Hubei province.

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Available abstract

Seventy field trials of potassium(K) fertilizer application to wheat were conducted in Hubei province.The effect of K fertilization on yield,profit of wheat,and K use efficiency of wheat in Hubei province were studied.The results showed that K application promoted both the yield and profit of wheat significantly.The average yield increment with K fertilization was 556～978 kg/hm2 and the increasing rate was 9.5%～16.7%.Compared to the control(no K treatment),profit of K application increased 192～897 yuan/hm2 and the value cost ratio(VCR) averaged 1.2～4.7.The partial factor productivity of applied K(PFPK) and agronomic K use efficiency(AEK) averaged 71.0 and 7.4 kg/kg K2O,respectively.According to linear plus platform model,the average optimum K application rate was 87 kg K2O/hm2 for wheat in Hubei province.

Key concepts: Potassium, Human fertilization, Mathematics, Fertilizer, Potash, Profit (economics), Yield (engineering), Agronomy

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