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南基桓,沈在燮 충북대학교 엽연초연구소 1974 煙草硏究 Vol.2 No.-
This experiment was carried out in order to observe the effects three elements of fertilizer(N.,P.,K.,) on the infection of tobacco brown spot disease. The plots were designed by split plot method with 8 treatment (A: check, B: 50% added applied N., P. and K., C: 50% subatracted applied three elements., D: 50% added applied N., E: 50% added applied P., F: 50% added applied P., G: no applied P., G: an applied P: and H: no applied P.). Check is N 14kg P2O5 21kg and K3O 28kg per 10 are respectively. Y.S.A was employed for sample variety and transplanted on 15 May. The results obtained as follow; 1) There were no differences among the plots (treatments) during the early growing stages. 2) The plot of 1½N, no K. and 1½N.P.K. have shown larger number of lesions than the check respectively. 3) The plot of 1/2 N.P.K.(C), 1½K(F), and no P.(G) have shown almost no differences in the rate of disease occurence as compared with check (A). In conclusion, excess application of N. and defficiency of K. seemed to be related with tobacco brown spot disease infection.
魯斗鉉,南基桓,沈在燮 충북대학교 엽연초연구소 1971 煙草硏究 Vol.1 No.-
This experiment was a split-plot design of 8 treatment with a combination of 3 levels of N, P and K fertilizers and 4 levels of 50% increase, 50% decrease, nullity and standard dressing (N:14, P:21, and K:28 per 10acr) per 8m2. Y.S.A was selected as a sample variety. The experiment plots were properly managed in accordance with the standard practices employed in the local tobacco fields. The results obtained are as follows: 1.No difference was among the treatments during the early stages of the disease occurence. 2.1.5N plots, K deficiency plots and 1.5N, 1.5P and 1.5K plots have shown the larger number of lesions than those of the standard plots. 3.1/2N, 1/2P and 1/2K plots, 1.5P plots, 1.5K plots and P deficiency plots showed almost no difference in the rate of disease occurence as compared with standard plots. Therefore, excess of N and K deficiency of fertilizers seemed to be closely related with tobacco brown spot disease infection.
南基桓 충북대학교 엽연초연구소 1974 煙草硏究 Vol.2 No.-
This study was carried out to make the most adapted crop rotation(combination) system for increasing the income with tobacco cultivation. The plots were designed by randomized complete-block method with 6 treatments and 3 replications. The results obtained are summerized as follows; 1) The best yields of leaf tobacco was obtained followed barley(F) and least was followed intertilled barley(A.B). 2) The best quality of leaf tobacco was obtained followed(A.B) and the lowest was followed barley(F) quite conversely as illustrated above. 3) The plots those no previous crops (C.D.E) were middle status both in yields and quality without great differences among themselves. 4) The generalized results those by quality and yields were better followed intertilled barley(A.B) and followed barley(F) than check(E) and poorer were no previous crops(C.D) than check(E) 5) In cases of intertilled or followed barley(A.B.F) were better in both quality and yields than no previous crops (C.D.E) plots. In general, hence leaf tobacco price, consists of multiplying quantity by price per kg, to promote income of the tobacco cultivation should be improved both factors those which have a tendency to contrary each other. When tobacco follows or intertilled barley not qualitative production but quantitative. Therefore, in flue-cured tobacco production in order to improve the leaf quality it is recommended the no previous crop system, actually. In conclusion, intertilled or followed systems are not only very significant able to improve the land utility but to increase the income that include the whole harvested.
鄭元采,盧載榮,南基桓,卞珠燮 충북대학교 엽연초연구소 1974 煙草硏究 Vol.2 No.-
This experiment was carried out in order to elucidate the effects of Manganese, Boron and Lime application on the yields and quality of the leaf tobacco in field being potential deficiency of Manganese and Boron. This experiment was designed with 3 levels of Manganese, 3 levels of Boron and 2 levels of Lime. The results obtained were as follows: The yield and the quality of the leaf tobacco were improved by application of Manganese as Manganese sulfate 10-15kg per 10a, but Boron was not shown as a factor to increase the yield. In the effect of Lime, the yield was increased but quality degraded when Lime was applied as Calcium hydroxide 150kg per 10a.