2001•He'nan nongye daxue xuebaoRequires access
Effect of potassium fertilizer application on changes of nutrient in wheat on dry land
Lu Feng Huai
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Abstract
Results of studies on potassium fertilizer application to dry land wheat showed that compared with the soil without potassium application, the utilization rate of nitrogen in the soil with potassium application increased by 3.81%, effectiveness of phosphate and potassium increased by 25.41%, and 8.23%, respectively, and of potassium increased by 20.83%; wheat yield increased by 447.3 kg·hm -2 , the yield increase rate being 8.74%. The marginal utility of potassium fertilizer was 5.204 kg. The best time for applying potassium fertilizer was at boot stage, with an optimum applying quantity of 75 kg·hm -2 .