頁籤選單縮合
題 名 | 臺灣水稻鉀肥連用肥效試驗結果屏東區報告=The Effects of the Continuous application of Potassium Fertilizers on Rice in Taiwan Report of the Pingtung Experiments |
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作 者 | 盛澄淵; 張魯智; | 書刊名 | 中華農學會報 |
卷 期 | 46 民53.06 |
頁 次 | 頁1-8 |
關鍵詞 | 鉀肥; 水稻; 連用肥效試驗; |
語 文 | 中文(Chinese) |
英文摘要 | This report presents the results of the Pingtung experiments obtained during the nine croppings of the five years from 1959 to 1963. The design of this experiment consists of two series of factors: first, two levels of compost, viz., without or with the application of 8,000 kg/ha of compost; and second, three levels of K2O at 0, 40 and 80 kg/ha. There were 6 combinations of treatments. The results are summarized below: 1. The first rice crop produces a higher yield of paddy than the second rice crop. The average yield of the five 1st rice crops is 4,941 kg/ha, while it is only 2,663 kg/ha for the four 2nd rice crops, or the first crop is 85.54% higher than the second crop. 2. The responses to compost and potash in terms of yield of grain are significant but there are no interactions (1) between these two factors, (2) between the years and the treatments and (3) between the crop seasons within the year and the treatments. In other words, the effects of compost and potash are independent from each other and are not influenced by the annual and seasonal climatic conditions. 3. The application of 8,000 kg/ha of compost gives on average an yield increase of 6.13% in the 1st crop and 3.60% in the 2nd crop; the combination of these two croppings shows an average increase of 5.40%, equivalent to 211.4 kg of paddy. 4. The applicaiton of potash at the rate of 40 kg/ha gives on average an increase of 2.95% in the 1st crop and 1.35% in the 2nd crop; the combination of these two croppings shows an average increase of 2.5%, equivalent to 97.4 kg of paddy. The application of potash at the rate of 80 kg/ha gives average yield increases of 4.17% in the 1st crop, 2.93% in the 2nd crop and 3.8% for the combination of the two crop seasons, equivalent to 109.5 kg of paddy. In the 1st crop the first dose of 40 kg/ha of K2O gives a greater response than the second dose of 40 kg/ha. 5. Both compost and potash are more effective on the 1st crop than on the 2nd crop; this may be due to the higher yield of the 1st crop as compared to the 2nd crop. 6. Each kilo of K2O applied at both rates of 40 kg/ha and 80 kg/ha increases the grain yield as per Table 5. For the 1st crop, with 8,000 kg/ha of compost, the average increments are 3.475 kg of paddy at 80 kg/ha. Without compost, a similar increment is recorded. For the 2nd rice crop, the increment is generally lower. 7. The individual experimental treatments have occupied the same plots, divided by small dikes, since 1959. Therefore, it is possible to determine whether the accumulation of potash occurs when the potash fertilizer is applied continuously in comparison with the plots which do not receive any potash application at all. From Tables 1-3, it is seen that there is no tendency for the statistical significance of the differences between treatments to increase gradually or abruptly with the lapse of years or seasons; thus, it can be said that there is no potash accumulation in the soil through its continuous application; the same is true for compost. |
本系統中英文摘要資訊取自各篇刊載內容。