토성과 식재깊이에 따른 튤립의 줄기 및 구근 생육

Effect of Soil Texture and Planting Depth on Shoot and Bulb Growth in Tulipa gesneriana L.

This study was conducted to examine the effects of soil texture and planting depth on shoot and bulb growth in Tulipa gesneriana ‘Ile de France’, ‘Kees Nelis’, and ‘Rundy’. In physical properties of clay loam and sandy loam, Solid, liquid, and gaseous phase of sandy loam were 54.7%, 13.3%, and 32.0%, respectively. Especially, gaseous phase of sandy loam was higher by 10.6% than that of clay loam. The porosity of sandy loam was 45.3%, and it was higher by 3% than that of clay loam. The pH of sandy loam and clay loam was 6.1 and 5.8, and EC of sandy loam was lower by 0.45 level than that of clay loam in chemical properties. The cation exchange capacity of clay loam was 4.68 me/100g, and it was higher in clay loam than in sandy loam. In ‘Ile de France’ and ‘Rundy’, shoot and flowering was better in sandy loam. But, shoot growth of ‘Kees Nelis’ was good in clay loam. In clay loam, shoot growth by planting depth was not different significantly. When bulbs were planted by 4~8 cm deep in sandy loam, shoot growth was better than the others. Bulb growth was more effective in sandy loam than in caly loam. The bulb planted by 4 cm deep in clay loam and 8 cm deep in sandy loam showed the good bulb growth in circumference and diameter, and weight of main bulb. Therefore, it was desirable that bulb of tulip was planted by 8 cm deep in sandy loam for shoot and bulb growth.