研究了不同氮钙配比下百日草无土栽培的生长和采后寿命的定量和定性指标

Aida Moghimian, Ali Mhammadi Torkashvand, A. M. Khomami
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引用次数: 0

摘要

设计了以Hoagland营养液为基质,在含砂、珍珠岩和泥炭的培养基上进行无土栽培试验,研究了百日草生长及采后对不同浓度氮、钙的响应。处理包括对照1(不加营养液)、对照2(不加氮和钙的营养液)和15和30 mM N与5和10 mM Ca的混合处理,采用完全随机设计,共6个处理,每个处理3个重复,每个重复3个锅。研究的性状为株高、茎粗、花径、根长、茎干鲜重、花干鲜重、花瓶寿命和茎部氮、钙浓度。结果表明:营养液中N浓度的增加增加了植株的株高和鲜重;但施用10 mM Ca和30 mM N对株高的影响最大。30 mM N和5 mM Ca处理显著降低了茎干重,显著降低了茎鲜重。对照1处理的瓶龄最低,为4.8 d。在营养液中添加10 mM Ca的处理,花瓶寿命最高(17 d),吸Ca量也最高。该处理的钙吸收量(85 mg/罐)显著高于其他处理。综上所述,为获得适宜的产量和较高的花瓶寿命,施用15 mM N (Hoagland营养液中标准N浓度)和10 mM Ca (Hoagland营养液中Ca浓度的2倍)为最佳处理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigating the quantative and qualitative indices of growth and postharvest life of Zinnia elegans in different rations of nitrogenand calcium in soilless culture
A soilless cultivation experiment, in a medium containing sand, perlite and peat, based on Hoagland nutrient solution, was designed and carried out to investigate the growth and postharvest response of Zinnia to different concentrations of nitrogen (N) and calcium (Ca). Treatments included control 1 (without nutrient solution), control 2 (nutrient solution without N and Ca), and the mixtures of 15 and 30 mM N and 5 and 10 mM Ca, arranged as a completely randomized design with six treatments, each treatment in three replicates and three pots in every replicate. The studied traits were plant height, stem diameter, flower diameter, root length, stem dry and fresh weight, flower dry and fresh weight, vase life and concentration of N and Ca in shoots. Results revealed that increasing N concentration in nutrient solution increased the height and fresh weight of the plants; but using 10 mM Ca and 30 mM N had the highest effect on plant height. Significant reduction of stem dry weight in 30 mM N and 5 mM Ca treatment in comparison with stem fresh weight of this treatment was observed. The lowest vase life (4.8 days) was observed in control 1 treatment. The highest vase life (17 days) was resulted by using 10 mM Ca in nutrient solution, and the highest Ca uptake was also in this treatment. Ca uptake in this treatment (85 mg/pot) was significantly more than other treatments. In conclusion, to have suitable yield and higher vase life, using 15 mM N (standard N concentration in Hoagland nutrient solution) and 10 mM Ca (twice the Ca concentration in Hoagland nutrient solution) was the best treatment.
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