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題名 | 水稻生育後期施用氮肥對收量及其他特性之影響(預報)=The Effect of Late-application of Nitrogen Fertilizer on the Grain Yield and Some Other Characters of Paddy Rice (Prelinminary Report) |
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作者 | 蔡文福; 陳烱崧; 林正義; | 書刊名 | 中華農學會報 |
卷期 | 49 民54.03 |
頁次 | 頁65-72 |
關鍵詞 | 水稻; 氮肥; 生育後期; |
語文 | 中文(Chinese) |
英文摘要 | The traditional application method for rice in Taiwan, was the nitrogen fertilizer applied completely before the second weeding and intertillage stage. According to recent research reports, a part of nitrogen fertilizer applied for later period was suggested. In this experiment, the nitrogen fertilizer was divided into serveral parts, and applied at different dates as shown in table 1. The varieties participated in the experiment were the "multi-ear" type Taichung 65 and the "heavy-ear" type Chianung 242. This experiment was arranged on split plot design with four replications. The methods of fertilizer application as used as main treatments and the different varieties as sub-treatments. The experiment was held at the experimental farm of National Taiwan University in 1963, and following results were obtained: 1. A part of nitrogen fertilizer applied at heading stage yielded good crop as compared with the traditional method of nitrogen fertilizer application especially in first rice crop. 2. Nitrogen supplied at the beginnig stage of primordia differentiation of the second rice crop also indicated increasing the number of grains per ear. The effect of Taichung 65 was better than that of the Chianung 242. 3. The effect of supplying nitrogen at the heading stage on fruiting, Chianung 242 was better than Taichung 65. It was due to the low fruiting percentage of the former. 4. Nitrogen content (or crude protein content) of brown rice and milled rice also increased about 10-15% when the nitrogen fertilizer applied at heading stage. |
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