논문 상세보기
pp.310-316
버어리종 담배의 생육과 수량에 미치는 석회시용량(토양 pH)과 질소원에 따른 효과를 알아보기 위하여, 석회시용량은 석회무시용, pH 5.5 적정양, pH6.5 적정양의 3수준으로, 질소원은 연초용복합비료(3.9%의 NH4 -N와 6.1%의 NH2 -N 함유), NaNO3 ,(NH2 )2 CO, (NH4 )2 SO4 의 4종을 두어 포장에서 시험한 바, 그 결과를 요약하면 다음과 같다. 1. 본포기생육은 석회다량구가 알칼리 장해로 불진하였으나, 적심후에는 만회되었다. 2. 초산태질소구는 본포기에는 생육이 불진하였고, 성숙기에는 하위엽의 황화가 빨랐다. 3. 수량 및 대금은 석회시용량 증가에 따라 증가하였으며, 질소원별로는 유의성있는 차이가 나타나지 않았다. 4. 토양 pH 상승에 따른 수량의 증가정도는 류안구가 제일 컸다.
A field experiment was conducted to find out the effects of liming(soil pH) and sources of N on growing characters and yield of burley tobacco. Treatments consisted of liming(nonliming, liming to soil pH5.5 and 6.5) as the main plot and N sources(compound fertilizer of containing 3.9% NH4 -N and 6.1% NH2 -N, NaNO3 ,(NH2 )2 CO and (NH4 )2 SO4 as the sub-plot. The growth of vegetative growing stage of limed plots were delayed(to compare the nonlimed plot) by influence of alkali. When the source on N was NaNO3 the growth of vegetative growing stage was unfavorable and the yellowing of lower leaves of maturing stage was rapid. The yield and value of cured leaf was increased by increasing the rate of Ca(OH)2 , but there was no significant differences among the source of N. The yield response to liming was greater when the source of N was (NH4 )2 SO4 than that of any other plots.
