ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
The Experimental Study on the Effect of Climate Warming on Fertilizer Amount and Efficiency in the Soil
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Abstract:
Climate warming has important effects on fertilizer amount and efficiency in the soil. By the use of the soil fertilizer experiment under 3 urea levels with parting period,the changes of rapidly available nitrogen (N) content in the soil are measured and the responses of the soil fertilizer efficiency to temperature are studies. The results show that the release amount of N increases in the soil when temperature goes up , and the release period shortens when the release speed is up.When temperature increases 1℃,release amount of N enhances 4% on the average and release period shortens 3. 6 days. In addittion,the greater fertilizer amount,the more release amount of N is,and the quicker release speed will be. Therefore in conditions of climate warming, total is fertilizer amount and frequency should be increased relatively, but amount each time should be decreased,thereby enhancing fertilizer efficiency, reducing disadvantageous impact of climate warming on fertilizer efficiency.
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