Influence of Light Intensity on Plug Establishment of Zoysia-82, Chewings fescue and Red fescue

Zoysia-82, Highlight Chewings fescue 및 Pennlawn Red fescue의 plugging에 대(對)한 조도(照度)의 영향(影響)

The present experiment was undertaken to study the influence of light intensity on plug establishment of zoysia-82, chewings fescue and red fescue. The results obtained are summarized as follows : In chewings fescue and zoysia-82, plant height and leaf length were increased and leaf width was decreased by reducing light intensity. But in red fescue, plant height and leaf length measured at 90 and 120 days after plugging under 9% of incident light were shorter than those under 30% of incident light. Percent ground cover was decreased by reducing light intensity in chewings fescue, red fescue and zoysia-82. Each part of dry weight in three species was getting lighter by reducing light intensity. Decrease of light intensity in zoysia-82 causes increasing chlorophyll a, b, and total chlorophyll content. But red fescue and chewings fescue had the most plentiful chlorophyll under 30% of incident light. Chewings fescue and red fescue had the lowest concentration of chlorophyll a/b under natural light intensity. But zoysia-82 had the lowest concentration of chlorophyll a/b under 30% of incident light. Tillering number of chewings fescue and red fescue was decreased by reducing light intensity. Internode length of zoysia-82 was longer in the order of : 1) 30% of incident light, 2) natural light, 3) 9% of incident light. And internode diameter was decreased by reducing light intensity.

주요(主要)잔디의 plug로 잔디포(圃) 조성시(造成時) 조도(照度)가 미치는 영향(影響)을 조사(調査)한 바 그 결과(結果)는 다음과 같다. Chewings fescue와 zoysia-82는 조도(照度) 감소(減少)에 따라 초장(草長)과 엽장(葉長)은 길었고 엽폭(葉幅)은 감소(減少)하였으나, red fescue는 이식(移植) 90일(日), 120일(日) 후(後) 조사시(調査時) 9%의 조도(照度)에서의 초장(草長)과 엽장(葉長)이 30%의 조도(照度)에서 보다 더 짧았다. 세 종(種) 모두 조도(照度)가 감소(減少)함에 따라 지표면(地表面) 피복율(被覆率)이 감소(減少)하였으며 각(各) 부위별(部位別) 건물중(乾物重)도 조도(照度)의 감소(減少)에 따라 가벼워졌다. Zoysia-82는 조도(照度)의 감소(減少)에 따라 엽록소(葉綠素) a, b, 및 총(總) 엽록소함량(葉綠素含量)이 증가(增加)하였으나, red fescue와 chewings fescue는 30%의 조도(照度)에서 엽록소함량(葉綠素含量)이 가장 많은 편이었고, 엽록소(葉綠素) a/b는 chewings fescue와 red fescue는 자연광(自然光)에서 낮았으나 zoysia-82는 30%의 조도(照度)에서 가장 낮았다. Chewings fescue와 red fescue의 분얼수는 조도(照度)가 감소(減少)할수록 감소(減少)하였다. zoysia-82의 절간장(節間長)은 30%, 자연광(自然光), 9% 조도(照度) 순(順)으로 길었고, 절간직경(節間直莖)은 조도(照度)의 감소(減少)에 따라 감소(減少)하였다.