為探討留置乾草之產量、品質及其對後期牧草產量之影響，以畜試所恆春分所牧草地，分砂土及粘土兩類土壤上生長之盤固草A24及A254為材料，以10月青割者為對照，每月青割一小區，調查其產量、品質，以後至次年生產季，調查其再生後之產量，結果顯示：留置乾草產量稍有增加，但至6個月後，反而下降。而一般在粘性土中生長者，產量較在砂土中生長者高。留置乾草之粗蛋白質含量變化不大，而試驗期間若下雨，含量會稍上升。粗纖維含量，則日漸增加。10月份青割後調製之乾草在倉儲後，每月呈現乾草重量減輕，含水量下降之情形。而倉儲之乾草，若在儲藏良好之狀況下，乾草品質並不下降。次年7月及9月正常生長季節收獲各區盤固草，調查產草量，結果與對照之間無顯著差異，表示留置乾草不會影響下期之生產，基於人工節省之考量，留置乾草應是可行之法。

In order to understanding the yield and quality of pangolagrass standinghay and the effect on the yield of the grasses in the next crop season, the experimental materials, pangolagrass A24 and A254,planted at sandy or clay soil, were taken from the grassland, at Heng-Chun Station, TLRI. The grasses were cut in October, November and December 1991. and Januany, Feberary, March. Arpil and May in 1992. after previouscutting on 16th, July, 1991. and the hay made in October was as check. The dry weight and hay quality were evaluated. The results showed that yield of hay increased gradually. but decreased after 5 months from Oct. 1991. The crude protein content decreased gradually, but crude fiber content increased gradually. The water content of hay. stored at barn, cut in October, decreared from 23 % to 15 % • but crude protein and crude fiber decreased insignificantly. The grasses after delay cutting were cut in July and November, 1992 and the yields of the grasses were not affected significantly .