Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/81549
標題: 不同氮源處理對萵苣硝酸氮含量日變化與鮮重的影響
Effect of Nitrogen Source on Diurnal Variation of Nitrate Content and Fresh Weight of Lettuce
作者: 王三太
Shen-Lin Lin
林深林
張武男
Woo-Nang Chang
San-Tai Wang
關鍵字: 氮源;Nitrate content;鮮重;日變化;硝態氮含量;Nitrogen source;Fresh weight;Diurnal variation
Project: Horticulture NCHU, Volume 22, Issue 1, Page(s) 43-50.
興大園藝, Volume 22, Issue 1, Page(s) 43-50.
摘要: 
萵苣(Lactuca sativa L.) R36品種以3mM硝酸鈣(6mM N)或3mM硝酸銨(6mM N)處理,於8月12日下午8點開始採收,每隔3小時採收一次,採收至8月13日下午5點。3mM硝酸鈣與3硝酸銨兩種養液處理的地上部硝態氮含量皆有日變化,而且在8個採收時間,3mM硝酸鈣養液處理的地上部硝態含量皆高於3mM硝酸銨處理。8個採收時間的硝態氮含量平均,3mM硝酸鈣養液為乾物含量的0.68%,而3mM硝酸銨處理為0.29%。3mM硝酸銨養液處理的地上部與根部鮮重分別為3mM硝酸鈣處理的1.43倍及1.2倍。

Lettuce(Lactuca sativa L.) plants were hydroponically grown in solutions containing 3 mM Ca(NO3)2 or 3 mM NH4NO3 as nitrogen source. Mature plants were harvested eight times in one day at a 3 hr. interval from 8:00PM Aug. 12 to 5:00PM Aug. 13. Diurnal variations of the shoot nitrate content were observed in either Ca(NO3)2 or NH4NO3 treatment. Shoot nitrate content of Ca(NO3)2 treated plants were higher than those treated with NH4NO3 at every harvest. The average shoot nitrate content of lettuce with Ca(NO3)2 was 0.68% of the dry weight, and it was 0.29% for the NH4NO3 treated lettuce. The fresh weight of the NH4NO3 treated lettuce were 1.43 or 1.2 fold heavier than those with Ca(NO3)2 treatment for shoot or root respectively.
URI: http://hdl.handle.net/11455/81549
ISSN: 0255-5921
Appears in Collections:園藝學系
第22卷 第01期

Files in This Item:
File Description SizeFormat Existing users please Login
興大園藝第二十二卷第一期p43~50.pdf693.01 kBAdobe PDFThis file is only available in the university internal network    Request a copy
Show full item record
 

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.