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題 名 | 臺灣主要禾本科牧草三年來之比較試驗=Experiment on Promising Grasses in Taiwan During 1958-1960 |
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作 者 | 王啟柱; 鄭建磐; | 書刊名 | 中華農學會報 |
卷 期 | 32 民49.12 |
頁 次 | 頁16-26 |
關鍵詞 | 臺灣; 禾本科牧草; |
語 文 | 中文(Chinese) |
英文摘要 | A comparative experiment on vegetative growth and forage yield of five promising perennial grasses, with the reseeding Sudangrass and soiling cane as checks,was conducted during 1958~1960. The five grasses used were Pangola (Digitaria decumbens), Albang-X (Andropogon nodosus), Guineagrass (Panicum maximum), Napier(Pennisetum purpureum) and Para (Panicum purpurascens). The two checks, one was Sudangress (Sorghum vulgare, sudanenuse) carried on yearly by reseeding, and the other, soiling cane, a saccharum specific hybrid: N:Co 310. Napier gave the highest forage yield among the grasses, with differences at 1% significant level; Para, the higher one, was above the other three also with differences at 1% significant level. Taking the forage yield of Napier (112, 983.2 kg/ha) as 100%, then that of Para (92,894.2 kg/ha) was 82.2%, of Albang-X (78,202.6 kg/ha), 69.2% of Pangola (77,280.6 kg/ha), 68.4%, and of Guineagrass (73,249.3 kg/ha), 64.8%. The differences among the latter three were insignificant during the three-year period. The chemical analysis of Napier, Para and Pangola grasses, harvested at the University Farm, NTU, in September, 1960, is presented. The percentages of crude protein of those grasses were Napier 6.25%, Para 5.96% and Pangola 6.39%; and the percentages of crude fiber were 38.97%, 35.58% and 36.29%, respectively. The growth habit of Albang-X, Pangola and Guineagrass were distinguishable. Albang-X grew slowly in the first year, and hence it throve gradually by tillering and probably by reseeding also; for this reason, its forage yield of the third year was still higher than that of first year. Pangola grew fast in summer time, but too slowly during late autumn to early spring; in other words, it could not stand and grow well in dry and cold season. Due to the increment of gap in the plots, year by year, Guineagrass failed to have a reasonable forage yield. On the basis of growth habit and utilization, Napier and Guineagrass make good soilage as well as silage; on the other hand, Para, Albang-X and Pangola are good for pasturage. Using earth-up as popular cultural practice, instead of the same treatment of field practice with those pastural grasses, Napier nad Guineagrass (probably including soiling cane) would possibly have better stands and in order to increase their growth duration and forage yields. The two check-grasses, Sudangrass and soiling cane grew vigotously in the first year. However, Sudangrass did not reseed successfully as expected, and could not give desirable yields in the second and third years. While the soiling cane, increasing gaps in plots gradually, decreased its yield year by year. If making a comparison of the average forage yields of the five grasses with that of Sudangrass in the first year, then Napier and Para were hipher than it by 30.8% and 7.5% respectively, and Albang X, Pangola and Guineargrass were less than it by 9.5%, 10.5% and 15.2%. Comparing those total yields with that of the soiling cane in the three-year period, then Napier was 47.4%, Para, 21.2%, Albang X, 2.0% and Pangola, 0.8% higher than it, but Guineagrass was still 4.4% less. |
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