行政院農業委員會台南區農業改良場  研究彙報第42號
 

硝酸態氮與銨態氮比率對設施內多花型菊切花品質之影響

張錦興、張元聰、王裕權、王仕賢

摘  要

張錦興、張元聰、王裕權、王仕賢.2003.硝酸態氮與銨態氮比率對設施內多花型菊品質之影響。台南區農業改良場研究彙報42:52~59。

本試驗以金絲黃、金風車、舞風車等3個多花菊品種為試驗材料,在溫室內以不作畦、不摘心、高密度種植,後以養液滴灌方式進行試驗,栽培期間將肥料配方中的氮素成份,以不同硝酸態氮與銨態氮比率調製施用,觀察其對切花生產品質的影響。其結果顯示,長期施用高銨態氮比率(硝酸態氮與銨態氮比率為2:8)的液肥,可增進全株葉子大小與一致性,並可維持下位葉有較濃綠的葉色。若以高硝酸態氮比率的液肥(硝酸態氮與銨態氮比率為8:2)施用,切花枝莖粗最細、花序最短、鮮重最輕。以硝酸態氮與銨態氮比率為6:4花莖最長,其次為8:2處理者,但對切花瓶插壽命卻無顯著影響。

關鍵詞:多花菊、設施、營養、氮素、品質

接受日期:2003年5月13日


Effect of Nitrate-N and Ammonia-N Ratio on the Cutflower Quality of Spray Chrysanthemum
Produced in the Protected Facility

Chang, C. S., Y. T. Chang, Y. C. Wang and S.S. Wang

Summary

Effects of 4 ratio of NO3-N and NH4-N application on the cutflower’s quality was studied in three local spray-type chrysanthemum varieties grown in non-tillage, non-pinching and high-density culture with drip irrigation in the protected facility. The greenest leaves on the lower nodes of stem occurred at NO3-N and NH4-N ratio was 2:8, which mean higher NH4-N concentration in the solution, being fertilized. In the cut flower’s quality, the longest stem was found under NO3-N and NH4-N ratio was 6:4 being fertilized. The stem’s diameter was smallest, inflorescence were shortest, fresh weight of cut flower were lightest at NO3-N and NH4-N ratio was 8:2 than others. The vase life was no different through all the treatment, though. The conclusion is: to get good cut flowers quality in both leaves and flower of the 3 spraymum varieties, plants must be fertilized with equivalent ratio of NO3-N and NH4-N, or fertilized with different ratios of NO3-N and NH4-N along with the growth period of the spraymum.

Key word: Spray mum, Protected facility, Nutrition, Nitrogen, Quality

Accepted for publication: 13 May, 2003


 

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