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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/74367
Title: | 超甜玉米果穗品質變化與冠層微氣象之相關性分析 Dynamic Relationship Between Sweet Corn Quality and Canopy Microclimate in Taiwan |
Authors: | Chi-Hung Lin 林奇鴻 |
Advisor: | 盧虎生(Huu-Sheng Lur) |
Keyword: | 超甜玉米,智慧農業,果穗品質,氣象因子,果穗品質與氣象因子之相關性, sweet corn,smart agriculture,corn ear quality,weather,relationship between corn ear quality and weather, |
Publication Year : | 2019 |
Degree: | 碩士 |
Abstract: | 超甜玉米於106年度果菜批發市場的產值已達5億新台幣,屬於重要之雜糧作物。於終年栽培下,部分月份之氣象因子常對果穗品質造成負面影響,導致果穗商品價值下降。然而,國內探討氣象因子與果穗品質變化之相關文獻仍有所欠缺,導致田間管理者發現果穗品質受損時,卻無本所依。因此,本研究以超甜玉米品種白美人為主,並以夏強與華珍為輔,分別於雲林縣內六個試驗地區設置微氣象站,收集田間冠層的溫度、濕度、日照量及雨量資料,同時分析果穗充實期間之果穗長度、寬度與重量及穎果重量、含水量與糖分含量,以期了解各氣象因子對超甜玉米果穗品質與產量的影響。結果顯示,由冠層微氣象數據發現,各氣象因子數值均和大氣局氣象測站數值具顯著差異,顯示冠層微氣象數據能反映更真實的冠層氣象因子。果穗品質分析結果發現,2月播種的超甜玉米果穗重、穗長、穗徑、單粒鮮重及單粒乾重皆顯著高於其他月分,而在7月均顯著低於其他月份。研究亦發現,蔗糖含量與產量、穗重及穗徑呈顯著正相關,而與葡萄糖與果糖含量呈顯著負相關,顯示果穗生長受限可能會降低葡萄糖與果糖同化成蔗糖的現象。果穗品質與雲林地區氣象因子的相關性分析顯示,在全生育期間,我們發現日射量的提升對於果穗品質而言是有利的,而總雨量小於200mm的條件下,均溫20-22 ℃與平均日射量15-18 MJ/m2的綜合條件下,果穗具有顯著較大的外型,且穎果甜度適中;均溫22-24 ℃與平均日射量18-21 MJ/m2的環境時,穎果甜味較高,期望本研究界定出的氣象因子範圍可供超甜玉米智能專家系統之參考。 Although sweet corn is a major crop in Taiwan, the economic value on sweet corn production has suffered a great loss due to the unstable quality among different planting seasons, moreover, only few research discussed the relationship between sweet corn quality and canopy microclimate. Therefore, this study was undertaken to determine the dynamic relationship between sweet corn quality and canopy microclimate. Focus on sweet corns with shrunken-2 (sh2) allele, field data including ear physical property and kernel sugar content, which covered different planting seasons were collected from six different regions. Additionally, canopy microclimate sensors were used to collect real time weather data, including temperature, humidity, precipitation and solar radiation. In our result, weather data showed that canopy weather was different from weather station including higher canopy daily maximum, lower minimum temperature, higher solar radiation, and unstable relative humidity and total rainfall, thus strengthens the urgent need to monitoring canopy environment through field sensors. From the relationship between each quality aspect, ear weight and ear width shared significant positive correlation with sucrose content, while shared significant negative correlation with glucose and fructose content, suggesting the limitation of ear development may reduce sucrose synthesis from glucose and fructose. Based on the dynamic relationship between quality and canopy microclimate, we propose the two optimal climate for sweet corn production, one is the whole growing season with 20 – 22 ℃ average temperature, 15-18 MJ/m2 average solar radiation and accumulate precipitation under 200 mm, and the other is the whole growing season with 22 – 24 ℃ average temperature, 18-21 MJ/m2 average solar radiation and accumulate precipitation under 200 mm. The former has the best corn ear physical property and normal kernel sugar content, and the latter has normal physical property and best kernel sugar content. Taken the result together, we report the dynamic relationship between quality and each canopy microclimate factors; propose sweet corn quality prediction model considering canopy microclimate; and provide reference to define suitable area for sweet corn production in Taiwan. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/74367 |
DOI: | 10.6342/NTU201901901 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 農藝學系 |
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ntu-108-1.pdf Restricted Access | 6.05 MB | Adobe PDF |
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