耙式調製型割草機利用於盤固乾草生產之評估

Evaluation of flail type mower conditioner to use on Pangola grass hay production

朱明宏(Ming-Hung Chu) ； 張敏郎(Min-Lang Chang) ； 劉信宏(Hsin-Hung Liu) ； 游翠凰(Tsui-Huang Yu) ； 陳嘉昇(Chia-Sheng Chen)

《畜產研究》 50卷2期 (2017/06) Pp. 78-85

摘要

氣候是影響乾草生產的關鍵，牧草在田間乾燥的時間愈長，受到降雨淋洗的風險愈高，對於乾草產量與品質的影響也愈大。為了加速牧草的乾燥，調製型割草機常利用於乾草生產。本研究之目的為利用耙式調製型割草機刈割不同生長期之盤固草（Digitaria pentzii），評估其加快牧草乾燥之效果與乾草生產效率。試驗結果顯示，調製型割草機能夠折斷草莖，使其較圓盤型割草機刈割之盤固草乾燥速度快，可提前半天至一天達到乾草收穫標準。耙式調製型割草機為割草機連結耙式裝置，需要比圓盤型割草機更大的動力來運轉，造成調製型割草機在刈割相同面積及生產同重量乾草時，其油耗均較圓盤型高。具匍匐性的長草區限制調製型割草機的刈割速度，使其每小時作業面積較圓盤型少20%，每小時生產之乾草重量亦較圓盤型少37%。然而，在不影響刈割速度的短草區，刈割範圍較寬的調製型割草機每小時之作業面積及乾草生產量分別較圓盤型高38% 及30%。調製型割草機能折斷草莖以加快盤固草乾燥速度，但此附加的調製步驟不會影響乾草品質。耙式調製型割草機能加快田間乾燥速度使乾草達收穫標準之時間提前，對於優質盤固乾草之生產有所助益。

關鍵字

調製型割草機 ； 盤固草 ； 乾草

並列摘要

Climate is the key factor affects hay production, the longer the time needs for field curing, the higher the risk of rain damage and the greater impact on yield and quality of hay. For speeding forage curing, mower conditioner is used for hay production frequently. To evaluate the effect on speed drying and the efficiency of hay production, this study was conducted to use flail type mower conditioner to mow different growth stage of pangola grass. The result showed that the mower conditioner could break the stem to make grass drying faster than it mowed by disc mower, so it would reach the harvest standard half to one day ahead of time. Flail type mower conditioner was the disc mower combined flail type conditioner, it needed more engine power to operate than disc mower, so its fuel consumption was higher than disc mower when mowed the same area or yielded the same weight of hay. The prostrate grass stem limited the speed of mower conditioner in long grass field, so its mowing area and hay yield per hour were 20% and 37% less than disc mower, respectively. However, the speed of mower conditioner was not decelerate in short grass field, its wider mowing range could make the mowing area and hay yield per hour were 38% and 30% higher than disc mower, respectively. Mower conditioner could break stem to accelerate the drying speed of pangola grass, but this additional conditioning process would not affect the hay quality. The flail type mower conditioner could speed field curing to reach the harvest standard ahead of time, it is beneficial for yielding high quality pangola grass hay.

並列關鍵字

Mower conditioner ； Pangola grass ； Hay