頁籤選單縮合
題名 | 圃場微氣候對於菸草生長速率之影響=Microclimatic Effects on the Growth Rate in Tobacco Plant under Field Conditions |
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作者 | 吳啟安; 周燈松; | 書刊名 | 中華農學會報 |
卷期 | 62 民57.06 |
頁次 | 頁80-88 |
關鍵詞 | 圃場; 微氣候; 生長速度; 菸草; |
語文 | 中文(Chinese) |
中文摘要 | (一)本試驗分三種不同栽值期處理,以探求菸草在圃場生長速率與微氣候因子之關係,藉以明瞭本省菸草生長潛力,以供栽培法改進之依據。 (二)早植菸葉面積擴大較晚植迅速,葉片生長量亦多,植期愈晚生長曲線之生長速率(K值)愈小,主要為氣溫影響。 (三)定值後生長率以第17~27天為最高,生長量以第27~37天為最多,主要田間管理如中耕、施肥、培土、灌溉等,應在此時期前完成最為有效而經濟。 (四)葉面積指數之增加與平均氣溫變化為正的相關關係,值期愈早達到理想葉面積指數之日數愈短,臺灣菸草適宜葉面積指數在6~7之間。 (五)株高與葉片之伸長量日變化以上午10時左右為最低,以後急速增加,14~16時達最高,日落後就急速降低維持到翌日10時左右,這種伸長量增減幅度變化之趨向與當日蒸發量、氣溫、地溫之日變化頗一致與相對濕度是相反。 (六)一株菸草日葉面積增加量與氣象因子中平均溫度關係最為密切,尤其中期最為明顯並達顯著。 (七)葉片伸長量之日變化與氣象因子中蒸發量關係最大,其相關達顯著,與日照強度僅為正相關但不達顯著。 |
英文摘要 | 1.The studies attempted to find out the relationships between microclimatic factors and the growth rate of tobacco plant under field conditions in order to improve tobacco cultival techniques by realizing the growth potentiality in Taiwan. 2. The expansion of leaf areas in the early plantation treatment was quicker than that in the late plantation treatment, and leaf growth increment was the same. The more late the plantation date, the more less the growth rate (K value ) obtained. These characteristic mentioned above was air temperature in all microclimatic factors observed. 3. The highest growth rate in whole growing period ranged 17-27 days after transplantation. The largest growth increment ranged 27-37 days after transplantation. Therefore, vaious field management such as inter-tillage, aditional fertilizer, banking, irrigation, etc., must be finished before this period, it will assure the most effective result to be obtained. 4. The result of correlation analysis indicated that increase of leaf area index was positively correlated with the variation of average air temperature. The more early plantation, was the more short days reached stage of ideal leaf area index. The adequate leaf area index of Taiwan tobacco was found to be 6-7. 5. The diurnal variation of plant height and leaves elongation might be described as follows: The minimum amount was found at 10 a.m., and then increased rapidly, until 2-4 p.m. reached its maximum amount respectively. They decreased rapidly after sunset until 10 a.m. next morning. The tendency of diurnal variation in elongation was corresponded with the amount of evaporation, air temperature and soil temperature, but just contrary to relative humidity. 6. The growth increment of total leaf area per day was more relative to the average air temperature among the microclimatic factors observed. Eventually, they were positively and highly correlated after middle growing stage. 7. The diurnal variation of leaves in elongation was more relative to the amount of evaporation among the microclimatic factors observed, and thier correlation coefficents were highly significant. To the intensity of sunlight there was no statistical significance, though it was positively correlated. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。