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Studies on Nitrogen Efficiency and Growth of Sugarcane Using 15N Tracer Technique

Author: LanLiBin
Tutor: LiangHe
School: Guangxi University
Course: Botany
Keywords: Cane Nitrogen Application Methods Nitrogen rate (15) ~ N tracer technique Nitrogen Utilization
CLC: S566.1
Type: Master's thesis
Year: 2011
Downloads: 29
Quote: 0
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Abstract


Tall sugar cane plants, the demand for nitrogen, nitrogen use efficiency and the Fate of Nitrogen order to study sugar cane, the test from different nitrogen sugarcane growth and nitrogen utilization of research and different nitrogen application rate of sugarcane growth and two nitrogen utilization compares the growth of sugar cane, sugar accumulation, nitrogen use efficiency, absorption NITROGEN proportion of the total absorption of nitrogen, nitrogen distribution in different parts of the sugar cane roots, stems, leaves and soil available nitrogen and nitrate dynamic. The main findings are as follows: Different Nitrogen Application Methods on sugarcane growth and nitrogen utilization of research facilities into the soil nitrogen absorption by whereabouts can be divided into the sugar cane plants, soil residues, leakage losses, other losses (mainly gas loss) parts. Studies have shown that certain effects of nitrogen application on sugar cane. Time nitrogen application the seedling stage of sugarcane good physiological and biochemical traits, but the analysis of variance is not significant. Time nitrogen fertilizer due to nitrogen leaching and other reasons, at a later stage there will be a shortage of nitrogen supply. The secondary nitrogen fertilization fertilization methods can significantly improve the physiological and biochemical properties of the sugar cane tillering stage, with three nitrogen fertilization did not significantly different from the production point of view, and cane juice brix higher reducing sugar cane juice. Three nitrogen fertilization fertilization sugarcane elongation and maturity of the physiological and biochemical traits, but the results of analysis of variance with treatment difference was not significant. Although the production with the highest sugar yield, but with the second highest secondary nitrogen application without significant differences. From the nitrogen utilization than concentrated nitrogen fertilizer nitrogen application in several high nitrogen utilization. 2, different nitrogen application rates on sugarcane growth and nitrogen utilization study in accordance with the conventional nitrogen fertilizer, 2.5g / basin nitrogen rate of sugarcane physiological and biochemical traits and yield traits than the poor, and analysis of variance results yield was significantly lower than other facilities nitrogen, from sugar cane quality side and sucrose gravity purity higher than reducing sugars in better quality. 5g / pots sugarcane physiological and biochemical traits of the amount of nitrogen than 2.5g / pots nitrogen rate is slightly better, but most of the analysis of variance results significantly. No significant differences in yield, the highest yield 7.5g / basin nitrogen rate. The cane quality than 2.5g / basin's slightly worse than 7.5g / basin slightly better. 7.5g pots / amount of nitrogen sugarcane physiological and biochemical traits is higher than the other two nitrogen levels are not significant, but the results of analysis of variance. Three nitrogen levels, but sugar cane quality worst in yield. Effects of nitrogen fertilizer utilization as nitrogen rate increased significantly under

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CLC: > Agricultural Sciences > Crop > Economic crops > Sugar crop > Cane
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