초지관리용 2종 복합비료를 개발토자 시제품(N-P2O5-K2O-MgO-B2O3: 14-10-12-3-0.2)을 일반단비와 공시하여 비효를 비교검토하였다. 대상초지로는 새로 조성된 겉뿌림 혼파초지(orchardgrass, tall fescue, Kentucky bluegrass 및 ladino clover) 및 기존의 겉뿌림 단파초지(orchardgrass 우점초지)를 공시장소로하여 2년간 시험을 수행하였다. 1보에서는 토양

초지조성용 2종복합비료를 개발코자 시제품(N-P2O5-K2O-MgO-B2O3 : 8-25-7-3-0.2)을 일반단비와 공시하여 비효를 비교검사하였다. 겉뿌림 배양초지(orchardgrass, tall fescue, kentucky bluegrass 및 ladino clover)에서 2년간 수행하였으며 1보에서는 토양의 화학성 및 목장의 초기생육상, 본고에서는 수량성, 식생구성비율 및 목장의 영양성분에 미치는 영향을 검사한 결과는 다음과 같다

To find out the best complex fertilizer for high yielding of rapeseed crop, experiment was conducted on complex fertilizers at the experiment field in upland of rapeseed in Mokpo Experiment Station, Nat'l Institute of Corp Science, RDA, Korea. Experiment was laid out in randomized complete block (RCBD) design. The effects of complex fertilizer (22-22-11) on the number of branches, pod length, percentage of seed set and seed yield were highest but on the plant height, ear length, and number of pods per ear were negligible. On th basis of the results reported above, for getting higher yield of rapeseed crop, among the tested fertilizers complex fertilizer (22-22-11) gave the superior performance and is recommended for application.

This study was conducted to investigate the effect of the salinity on growth, inorganic ion content, and photosynthetic rate (~textrmPN ) in Korean ginseng (Panax ginseng C.A. Meyer) with complex fertilizer (CF) and NaCl concentrations. The salinity was applied to plant using NaCl and CF, and controlled an EC as 0.0, 1.0, 2.0 and 3.0 dS ~textrmm-1 . The salinity treated three times at 35, 42 and 49 d after transplanting. The leaf area in different electrical conductivity (EC) decreased only the higher NaCl 1.0 dS ~textrmm-1 . The root growth increased with CF and especially, it was two times higher at 3.0 dS ~textrmm-1 than that of control. But the root growth sharply decreased with NaCl compared to CF. The light saturation point of Korean ginseng was around 100 ~mu~textrmmol~;~textrmm-2~textrms-1 photosynthetically active radiation (PAR), and ~textrmPN increased as CF increased but decreased with NaCl especially at the late growth stage. The ~textrmNa+ content in Korean ginseng increased sharply with NaCl.