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측조시비기용(側條施肥機用) 호상비료(糊狀肥料) 개발(開發)에 관(關)한 연구(硏究) -I. 제조시험(製造試驗)
신제성,성기석,박영대,김복진,Shin, Jae-Sung,Seong, Ki-Seog,Park, Yeong-Dae,Kim, Bok-Jin 한국토양비료학회 1986 한국토양비료학회지 Vol.19 No.4
이앙기(移秧機)에 부착(附着)된 시비기(施肥機)를 이용(利用)하여 이앙(移秧)과 동시(同時)에 토양(土壤)에 주입(注入)할 수 있는 호상비료(糊狀肥料)를 개발(開發)한 결과(結果)는 다음과 같다. 아미노산폐액(酸廢液)에 인산(燐酸), 중과석(重過石), KOH, 요소(尿素), DAP 염화가리순(鹽化加里順)으로 첨가혼합(添加混合)하여 반액체(半液體)인 수도용(水稻用) 호상복합비료(糊狀複合肥料) 제조(製造)가 가능(可能)하였으며 시제품(試製品)의 NPK 함량(合量)은 시제품(試製品) I이 12.50-14, 25-13.01, 시제품(試製品) II가 10.59-14.88-13.17 이었고 pH는 두 제품(製品) 공(共)히 6.5 내외(內外), 비중(比重)은 1.45g/cc 이었다. A trial paste fertilizer for rice was manufactured by a developed process using major raw materials of waste liquid from glutamic acid fermentation, urea, phosphoric acid, diammomium phosphate and potassium chloride with potassium hydroxide for pH adjust and both glycerin and $HB_4O$ for enhancing and maintaining dispersion of paste. The ratios of N, $P_2O_5$ and $K_2O$ for trial products of paste fertilizer were 10:15:13 for Japonica var., and 12.5:15:13 for Indica var., and it was 6.0 in pH and 1.45g/cc in specific gravity.
경관형용사를 활용한 생태축 복원사업의 경관변화요인 분석 -정면경관을 대상으로-
이우성 ( Lee Woo-sung ),박영대 ( Park Yeong Dae ),권태호 ( Kwon Tae-ho ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2017 한국환경복원기술학회지 Vol.20 No.1
The purpose of this study is to evaluate the preference and image on landscape of before and after the restoration in the four study areas where the restoration project of Baekdudaegan ecological ridgeline was carried out and to explore the change factors of image preference according to restoration project. The study areas were Beoljae, Ihwaryeong, Bijoryeong, and Yuksimnyeong and 248 questionnaires were used for analysis. As a result of the recognition analysis on restoration project of ecological ridgeline, the awareness of the project was low at 2.63, the satisfaction of the project was 3.42, and necessity of the project was 4.07. In terms of the preference analysis for landscape photographs, the all preferences of four sites were improved after the project than before. In the result of the landscape image evaluation, images such as `lifeless`, `uniform` and `ugly` were high before the project, however, images such as `clean`, `tidy`, and `stable` were high after the project. As a result of analyzing the change factors of image preference according to the restoration project, adjectives such as `beautiful- ugly` and `open-closed` influenced the preference change in common. These findings can be uti lized as the base data for the planning direction for the construction of new ecological ridgeline or the landscape conservation of existing ecological ridgeline.
라오스 개벌림에서 다섯가지 자생수종과 각기 다른 조림처리의 Enrichment Planting이 묘목의 생장특성에 미치는 효과
찬사몬폰고우돔 ( Chanhsamone Phongoudome ),실라반사와드봉 ( Silavanh Sawathvong ),우수영 ( Su Young Woo ),와이문호 ( Wai Mun Ho ),박영대 ( Yeong Dae Park ) 한국농림기상학회 2012 한국농림기상학회지 Vol.14 No.2
Enrichment planting is commonly used for increasing the density of tree species in secondary forests and one of forest rehabilitation programs in Lao PDR. This study aimed to determine the performance of five native species in enrichment planting using different canopy opening treatments, and to examine the suitable species and silviculture techniques applicable to a logged-over forest in Lao PDR. Results of the study showed that only crown height had significant difference among species and planting treatments. The survival rate and crown diameter were significantly different by species, but not by planting treatments. However, root collar diameter (RCD) and height of seedlings showed significant differences among planting treatments. Among the study species, Hopea odorata and Dalbergia cochinchinensis showed significantly higher survival rate and height growth, indicating their suitability in enrichment planting for rehabilitation of forest in Lao PDR. The results also suggested that 2 m width line planting stimulated RCD growth, but wider line planting, such as gap planting, promoted height growth of seedlings.
경기도 광주 지방 잣나무림 , 낙엽송림 , 활엽수림에서 수관통과우 , 수간류 , 토양수내 양료동태
박영대,이돈구,김동엽 한국임학회 1999 한국산림과학회지 Vol.88 No.4
The objectives of this study were to examine the amount of nutrient input by throughfall and stemflow, and the nutrient dynamics by throughfall, stemflow and soil solution among Pious koraiensis, Larix leptolepis and hardwood forests including oaks at Kwangju-Gun, Kyonggi-Do. A total amount of rainfall during the study period was 1410.1mm. Of the total rainfall, 85% was from throughfall at the L. leptolepis stand, 84.5% at the thinned P. koraiensis stand, 83.2% at the unthinned P. koraiensu stand and 81.2% at the hardwood stand, showing greater throughfall at the conifer stand than at the hardwood stand. Stemflow showed 2.7% of rainfall at the hardwood stand, 1.3% at the unthinned P. koraiensis stand, 1.2% at the thinned P. koraiensis stand and 0.8% at the L. leptolepis stand, showing greater stemflow at the hardwood stand than at the conifer stand. Ion concentration of stemflow was greater than those of rainfall and throughfall. The conifer stand showed higher ion concentration than the hardwood stand both for ration and anion. The ion concentrations of throughfall and stemflow were higher in the descending order : NH₄^+-N$gt;K^+$gt;Ca^(2+)$gt;Na^+$gt;Mg^(2+) for rations and SO₄^(2-)$gt;NO₃^--N$gt;Cl^- for anions. After the precipitation passed through the canopy, K^+ increased most at the hardwood stand, whereas NH₄^+-N did most at the P. koraiensis and L. leptolepis stands. The ion concentration of soil solution was higher in the descending order : Ca^(2+)$gt;Mg^(2+)$gt;Na^+ for rations and NO₃^--N$gt;Cl^-$gt;SO₄^(2-) for anions. NH₄^+N and K^+ seemed to be supplied primarily from atmospheric deposition while Ca^(2+), Mg^(2+) and Na^+ from weathering.