The results showed that the moisture and chlorophyll contents in tobacco leaf decreased gradually, total nitrogen content changed little, nicotine content declined slightly as the advance of curing.
Meantime it keeps the coefficient of homogeneity of red clover far below the 1.0 level but causes the total nitrogen content of soil to decrease by 0.085%.
Enhanced UV-B radiation significantly reduced leaf area (50.1%) but increased leaf total nitrogen content (102%).
增强UV - B辐射显着减少叶面积(50.1%),但增加了叶片全氮含量(102%)。
In order to meet the feed requirements for FCC, shale oil was treated by oxidation and complexation, to extrude the basic nitrogen components and to reduce the total nitrogen content of shale oil.