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.
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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