http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
施肥水準이 牧草,野草의 消化率 및 可消化養分收量에 미치는 影響
鄭昌朝 제주대학교 1978 논문집 Vol.10 No.-
Study was conducted to investigate the effects of nitrogen, phosphorus, potash and lime ap- plication levels on the digestible dry matter yidlds of native grasses and Dactylis gkomerata L. from Jan. to Oct. 1977. Nitrogen application levels have significantly influenced on the D.M. (Dry matter) and D.D.M. (Digestible dry matter) yield of native grasses. Phosphrus application levels were also significantly (P<0.05) increased on the D.D.M. yield of Dactylis glomerata L. when applied with potash, however, reverse tendency was found when applied with lime. D.M. digestibilities of native grasses and Dactylis glomerata L. were not sighificantly impr- oved by the fertilizer application levels, and there were a tendency to decline the D.M. diges- tibility by a cutting stage in native grasses. A highly significant correlation coefficient (r= 0.99) was observed between D.M. digestibility and cutting periods. The linear regression equ- ation was represented as Y=4 4.8-4.1 X: where Y=digestibility and X= cutting periods. It is conculuded that the optimum fertilizer application level of native grasses and Dactylis glomerata L. for maximum D.D.M. yield is suggested as 20-30kg in N, 10-20kg in ?? 16- 24kg K₂O and 600kg lime per 10a.
鄭昌朝 제주대학교 1984 논문집 Vol.19 No.-
低質粗飼料의 飼料價値 增進을 위해 放射線照射의 效果를 試驗하였다. 보리짚,보리가락 및 油菜깍지를 供試하여 ??線源을 利用 0,2.5,5,10 및 25 Mrad를 照射하였다. 放射線照射水準은 Hemicellulose와 NDF의 組成分에 影響을 주어 高水準에서 그 含量이 減少되고 있었다. 放射線照射의 效果는 보리가락에서 Invitro 消化率을 높였으며, 10,25 Mrad 水準에서는 현저한 (P<0.01)消化率의 增加를 나타내었다. 다만,2.5, 5 Mrad照射는 各試料 모두 對照區에 비해 消化率의 減少現象을 보이고 있었다. 醱酵 48 時間에서 平均 Total VFA의 生成量은 보리가락과 油菜깍지가 가장 優勢하였으며,25Mrad水準은 모든 飼料의 VFA 生成量을 增加 시키고 있었다. C/C Ratio 는 高線量水準에서 3~5 時間에 가장 크게 나타났으며 그後 부터는 漸次 減少되고 있었다. Effects of Gamma irradiation on low quality roughage, to engance their potential nutritive value were examined. Barley straw,Barley husks and Rape hulls were irradiated with doses of 0,2.5,5,10 and 25 Mrad using ??Cosurce.Hemicellulose and Nutrural Detergent Fiber (NDF) content of tested materials were decreased by the higher irradiation dose,with 10 and 25 Mrad. Significant (P<0.01)increases in InVrtro D.M.disapperance ofbarley husks were altred by 10 and 25 Mrad doses but to a less estent the digestibility with other doses.Mean total V.F.A. production at 48 hours fermentation was highest in Barley husks and Rape hulls.25 Mrad dose increased increased the V.F.A. concentration in all materials tested. Higher doses also improved the acetic and propionic ratio (C₂/C₃)at 3-5 hours fermentation, this ratio gradually decreased thereafter