제주도 혼파목초지의 개량연도에 따르는 유독잡초의 분포조사 = The Distribution of Poisonous Weeds with Advancing Years on the Improved Pasture in Cheju Island

다국어 초록 (Multilingual Abstract)

This study was conducted to investigate the frequency and distniustion of poisonous weeds on the improved pastures around Mt. Halla during the six years from 1977 to 1982, which was used for grazing after reclaimed from native grassland and sowed with the mixed seeds of Dactylis glomemra, Festuca arundinacea, Trifolium repens, Lolium multiflorum etc. The results obtained are summarized as follow:
1. The distribustion of poisonous weeds was found 7 species in the first year pastures and increased res- pectively year by year to 20 species in the sixth year pastures.
2. The poisonous weeds that were found on the pastures from the first to the third year were Pinellia tertnata, Salanum tuberosum, from the fourth to the sixth year were Adonis amurensis. Clematis mand-shunca, PursatiIIa koreana, Impatens aphanantha, Ricinus communis, Pyola japonica, htum stnamo-nium, Solanum nigrum, Platycodon grandiflorum, and from the first to the sixth year werePteridium aquilinum. Rumex acetocelk, Amaranthus spinosus, Ranunculus jnponicus, Ambumsb elarbr etc.
3. The introduced poisonous weeds that were found on the improved pastures were Rumex acerocella, Amaranthus spinosus, Ricinus comunis, Datum stmmonium, Nicotiana tabacum, Solrmum tubetosum, Ambumsia elatior etc.

목차 (Table of Contents)

• Summary = 39
• 서언 = 39
• 재료 및 방법 = 40
• 결과 및 고찰 = 40
• 적요 = 43
• <인용문헌> = 43