Brittle Culm 벼의 예취높이가 청예수량 및 영양가에 미치는 영향

Effects of Cutting Height on Forage Yield and Nutritive Value of Brittle Culm-Rice

Brittle culm벼의 예취높이를 구명하여 조사요로서의 수량 및 영양가를 평가하고자 섬진벼 및 Brittle culm인 KL501 품종을 공시하고 예취높이를 지상 0, 5, 10 및 20cm 달리하여 1996년 호남농업시험장 수도포장에서 수행한 결과를 요약하면 다음과 같다. 1. 재생초장, 경직경 및 재생경율은 예취높이를 높게 할수록 크고 높았으며 분얼경수는 품종 및 예취높이간유의성이 인정되었다. 2. 조단백질, 조지방 및 NFE 함량은 1차 예취시 예취높이가 높아짐에 따라 증가하나 조섬유 및 조회분함량은 이와 반대의 경향이며 2차 예취시 예취높이가 높아짐에 따라 조단백질 및 조지방함량은 감소하고 조섬유 및 조회분함량은 증가하였으나 NFE 함량은 처리간 차이가 없었다. 3. 청예수량 예취높이 10cm가 다른 처리구보다 많았는데 섬진벼는 4.45ton /ha, KL501은 4.71ton /ha이며 건물수량은 섬진벼가 1.16 ton /ha, KL501이 1.14 ton /ha이었다. 4. TDN함량은 1차 예취시 예취높이가 높을수록 증가하나 2차 예취시는 이와 반대의 경향이며 TDN수량은 예취높이 10cm, 예취시 섬진벼는 0.63ton /ha, KL501은 0.61ton /ha로 다른 처리구보다 많았으나 품종간 차이는 인정되지 않았다.

This experiment was conducted to determine the effects of cutting height on the yield and nutritive value of brittle culm rice. A brittle culm cultivar, KL501, was compared with a non-brittle culm rice, Seomjinbyeo. The cultivars were grown in paddy until flowering stage at which the first cutting was made followed by the second cutting on October 20. Cutting regime conducted were 0, 5, 10 and 20cm from the surface. Herbage yield, TDN and other nutritive values were measured. As the higher cutting height, crude protein, fat and NFE (nitrogen free extract) contents were increased and crude fiber and ash content were decreased at the first cutting, while those at second cutting were increased except NFE content. Fresh and dry matter yield at 10cm cutting height, Seomjinbyeo was 4.45 and 1.16t /ha, KL501 was 4.71 and 1.14t /ha, respectively. TDN content of first cutting was increased as the higher cutting height, but that of second cutting was decreased. TDN yields of Seomjinbyeo and KL501 at 10cm cutting height were highest by showing 0.63t /ha and 0.61t /ha, respectively.