|Title:||氮肥施用方式對藺草產量與品質之影響||Other Titles:||Effect of Nitrogen Fertilization on The Grass Yield and Quality of Mat Rush (juncus effusus L.decipiens Buck)||Authors:||胡敏夫
|Issue Date:||8-Sep-1988||Publisher:||農業試驗所||Journal Volume:||37||Journal Issue:||3||Start page/Pages:||299-304||Source:||中華農業研究||Abstract:||
The influences of amount and frequency of N fertilization on the yield quality of mat rush were studied with the aim at evaluating the adequacy of heavy application of N fertilizer in coventional cultural practice. The amount of N applied per hectare before and after tip-cutting for the four treatments were, respectively, 147 and 441 kg (treatment A), 84 and 346 kg (B) 84 and 252 kg (C), and 84 and 301 kg (D).
Mean values of stem length, number of stem per hill, dry sraw yield and percentage of valuable stem (with length over 75cm) were highest for treatment A, the coventioal method of N fertilization (127.4cm, 330, 18,400kg/ha and 70%, respectively) as compared to the othe treatments. In other words, heavy N fertilization tended to restult in better agronomic performance. However, no significant difference existed among four treatments for most of the characters with the only exception of percentage of valuable stem.
In terms of profit, treatment A was the highest among the four treatments. However, in this treatment the heavier application of N (63 kg/ha mor than the others) in the early stage did not enhance the growth, and sheath blight prevailed after tip-cutting due possibly to heaving N fertilization. Therefore, treatment B, i. e. 84 and 346 kg/ha of N applied before and after tip-cutting, respectively, was recommended. The application of soybean cake after tip-cutting did not increase the yield and exhibit any beneficial effect, and therefore was not recommended as a practical measure.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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