Exploratory experiment on fertilizer utilization efficiency of early rice Zhongzao 39 in Huangyan District
This study used early rice Zhongzao 39 as the experimental material and conducted a fertilizer efficiency experiment in Yuanqiao Town,Huangyan District,to explore the fertilizer utilization efficiency under conventional and formula fertilization conditions.The results showed that under the condition of reducing nutrient input by 51 kg·hm-2 compared with conventional fertilization,the yield of early rice under formula fertilization was 7 386 kg·hm-2,which was an increase of 109 kg·hm-2 compared with the yield of 7 277 kg·hm-2 under conventional fertilization.According to the difference method,the utilization rates of nitrogen fertilizer,phosphorus fertilizer,and potassium fertilizer in the formula fertilization treatment were 38.7%,41.0%,and 85.7%,respectively.Among them,the utilization rates of nitrogen fertilizer and potassium fertilizer were 6.0 and 24.1 percentage points higher than conventional fertilization,and the utilization rate of phosphorus fertilizer was 1.0 percentage point lower than conventional fertilization.Further improvement of fertilizer utilization rate is needed.
early riceHuangyanformula fertilizerfertilizer utilization efficiency
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