现有的材料说明，土壤年龄对土壤的氮素形态分布没有明显的影响。
SummaryResults available showed that soil age did no significant effect on the distribution of the forms of soil organic nitrogen.
结果表明，不同氮素形态配比影响了植株各器官干重占全株干重的百分比。
The results showed that different nitrogen forms significantly affected the dry matter accumulation percentage in different plant organs.
随着营养液中氮素形态比例的不同，作物吸收的氮素营养亦会发生明显改变。
The nitrogen nutrition absorbed by rice change apparently with different proportion of different nitrogen form in the water culture.
甜椒对不同形态氮素的吸收利用有显著差异。
The absorption and utilization of different form of nitrogen in sweet pepper were studied.
结果表明，该区域土壤有机质、全氮及各形态氮素含量呈现先降后升的趋势。
The result shows that the content of soil organic matter, total nitrogen and different forms nitrogen decreased firstly, then increased by time pasted.
水培条件下研究了不同形态氮素对植物铁素营养的影响，以及铁对植物氮素代谢的影响。
The effect of different N fertilizer forms on plant iron nutrition and the role of iron in plant N metabolism were studied under nutrient condition.
采用水培方法研究了不同形态氮素和饼肥浸提液对烤烟光合生理特性的影响。
A pot experiment was conducted to study the effects of different nitrogen nutrition on photosynthetic characteristics in tobacco leaves.
不施用有机肥时，水溶性无机态氮为水溶态氮素流失的主要形态，所占比例在60％左右；
Without the application of manure, the inorganic nitrogen is the main pattern of the water-solution nitrogen loss, occupying about 60%.
径流液中各形态氮、磷浓度远高于渗漏液，而两种流失方式下排水量差异不显著，故地表径流是该条件下氮素和磷素流失的主要方式。
The concentrations of nitrogen and phosphorus in runoff water is higher than that in infiltrated water. Surface runoff is the main way of nitrogen and phosphorus losses under the condition.
施用有机肥后，水溶性有机态氮是水溶性氮素流失的主要形态，平均占到60- 70%以上。
With the application of the organic manure, the organic nitrogen is the main pattern of the water-solution nitrogen loss, of which the average occupies more than 60-70%.
施用有机肥后，水溶性有机态氮是水溶性氮素流失的主要形态，平均占到60- 70%以上。
With the application of the organic manure, the organic nitrogen is the main pattern of the water-solution nitrogen loss, of which the average occupies more than 60-70%.
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