STUDIES ON THE CHLORINE OF BURLEY TOBACCO PLANTS. V. THE EFFECT OF NITROGEN FERTILIZER TYPE ON THE CHLORINE ABSORPTION BY TOBACCO PLANTS.

버어리종 담배의 염소에 관한 연구 V. 질소질 비료의 형태가 담배의 염소흡수에 미치는 영향

Effect of several nitrogen fertilizer sources on the chlorine absorption by the burley tobacco plants was investigated under the field and pot condition. The nitrogen sources included compound fertilize.(containing 3.9% NH4-N and 6.1% NH2-N), (NH4)2SO4, NaNO3. (NH2)2CO and NH4NO3. The chlorine content of leaf during growing stage was high in (NH4)2SO4 plot , and the differences among nitrogen sources was remarkable at maximum growing stage. The chlorine content of cured leaf was high in (NH4)2SO4 plot. When the (NH4)2SO4 was applied, the total alkaloid content of cured leaf was increased and the color of cured leaf became undesirable with the increment of leaf chlorine. The yield, quality and value of cured leaf were high in NaNO3 plot , while low in (NH4)2SO4 plot.