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山区野生蔬菜资源调查及其开发利用 总被引：4，自引：0，他引：4
一、野菜特点 (一)营养价值高 野生蔬菜营养成分有蛋白质、脂肪、糖类、粗纤维、胡萝卜素和维生素C等,这些都是人体必需的营养元素。败酱(苦菜)、蕨等养分含量比常规蔬菜高1—2倍。野菜中还含有无机盐,其中特别有益的元素有钙、磷、镁、钾、钠以及铁、锌、铜、锰等。这些元素在野菜中含量的比例基本一致,正符合于人体需要量的比例。 相似文献
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正荠菜(Capsella bursa-pastoris)属十字花科荠菜属一二年生草本植物,是人们最喜爱的野菜之一,以鲜绿嫩叶供食用,气味清香、鲜美,营养丰富。荠菜除含有丰富的维生素C和胡萝卜素外,还含有较多的矿质元素,其中钙含量为蔬菜最高,并含有钾、镁、磷、锰、锌、铜等多种元素。另外荠菜含有的荠菜酸,有利尿、止血、清热及明目等功效。荠菜性喜冷凉,人工栽培主要有春播和秋播,春播生产时间较短,秋播一次播种可多次采收,采收时间较 相似文献
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<正>翡翠菜花,又叫宝塔菜花,是花椰菜的一个变种。据测定,翡翠菜花的总糖含量为2.29%,粗蛋白质含量2.42%,此外每100g鲜球中含有维生素C65.1mg、钾262mg、钠19.1mg、钙18.3mg、镁17.2mg,还含有大量的铁、锰、锌等元素,不仅 相似文献
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水芹和旱芹的营养成分分析 总被引：1，自引：0，他引：1
以常规方法对毕节水芹菜和旱芹菜的营养成分含量进行测定和比较分析.结果表明:水芹菜的蛋白质、维生素B1、维生素E、胡萝卜素、钾、钙、磷、铜和硒的含量均比旱芹菜高;而碳水化合物、粗纤维、维生素A、维生素C、钠、铁、镁和锌的含量则比旱芹菜低. 相似文献
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健康时尚蔬菜：生菜的无土栽培技术 总被引：1，自引：0，他引：1
生菜极富营养,含有抗氧化物、β胡萝卜素及维生素B1、B2、B6和维生素C、维生素E,它还含有丰富的微量元素和膳食纤维素,有钙、磷、钾、钠、镁及少量的铜、铁、锌。常吃生菜能改善胃肠血液循环,促进脂肪和蛋白质的消化吸收。生菜还能保护肝脏,促进胆汁形成,防止胆汁淤积,有效预防胆石症和胆囊炎。另外,生菜可清除血液中的垃圾,具有... 相似文献
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广西富川纽荷尔脐橙园土壤和叶片营养状况研究与评价 总被引：3，自引：0，他引：3
对广西富川县60个纽荷尔脐橙园土壤和叶片样品进行营养成分检测分析。结果表明,土壤全部偏酸,有效硼普遍不足,有效锰不足的现象也较多,土壤有机质、碱解氮、有效磷、交换性镁和有效铜含量中等,有效铁含量较丰富,有效钾、有效锌、交换性钙含量高;叶片中磷、钾、铁、锰、镁含量基本处于适量至高量水平,氮也较丰富,钙不足现象明显,铜缺乏现象严重,全都缺锌;土壤pH值与交换性镁呈极显著正相关,与有效钾呈极显著负相关;土壤有机质与有效锌呈极显著正相关;土壤交换性钙与叶片钙含量呈显著正相关,土壤交换性镁与叶片镁含量呈显著正相关,土壤交换性钙、交换性镁与叶片锰含量呈极显著负相关。 相似文献
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正油菜营养丰富,每100克中含热能401.7千焦,蛋白质1.8克,脂肪0.5克,膳食纤维1.1克,碳水化合物2.7克,灰分1.0克,胡萝卜素620微克,维生素A103微克,维生素B20.11毫克,维生素PP0.7毫克,维生素C36毫克,维生素E0.88毫克,钾210毫克,钠55.8毫克,钙108毫克,镁22毫克,铁1.2毫克,锰0.23毫克,锌0.33毫克,铜0.06毫克,磷39毫克,硒0.79徽克。油菜含钙、铁 相似文献
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The edible portions of 5 tropical leafy vegetables, Amaranthus caudatus (A), Cucurbita pepo (C), Telfairia occidentalis (T), Solanum aethiopicum (Sa) and Solanum macrocarpon (Sm), were analysed for their contents of calcium (Ca), phosphorus (P), potassium (K), magnesium (Mg), sodium (Na), zinc (Zn), iron (Fe), manganese (Mn), copper (Cu) and chloride (Cl). The analyses were performed in relation to 4 levels of nitrogen (N) fertilization (0, 100, 150 or 200 kg N/ha) and 4 harvest (H) periods (7, 9, 11 or 13 weeks post-planting).N application had no significant effect on the accumulation of Ca, K, Na, Cu and Zn in all the 5 vegetables and on the P and Mg of T, Sa and Sm. However, it depressed the Fe content of all the vegetables and the Mg content of A and C, but increased the Mn and Cl contents of all the vegetables and the P content of A and C. With increasing age, the P, Na, Zn and Mn contents of the vegetables increased significantly, while Fe and Cu of all the vegetables, the K of A, C and Sm, and P of A and T decreased. 相似文献
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基于因子分析和聚类分析的杧果种质矿质元素含量评价 总被引：6，自引：0，他引：6
以53个杧果品种的套袋果实为试材,测定其10个矿质元素含量,运用因子分析和聚类分析等统计方法对矿质元素含量特征进行分析。结果表明,不同品种果实中矿质元素含量存在显著差异,10种元素平均含量依次为：K > P > Mg > Ca > Na > Mn > Fe > Zn > Cu > B,变异系数在16.79%（P）~ 52.28%（Mn）之间;各矿质元素含量均服从正态分布;Mg与Mn、Zn、Cu、P、K、B之间,Zn、Cu、K两两之间,P与K之间均呈显著正相关;K、P、Ca、Mn和B是杧果果实的特征矿质元素;53个品种可以分为4类：（1）高K、P、Mg、Zn和Cu 含量的品种11个,（2）高Na和Fe含量的品种18个,（3）低Mg、Zn和K含量的品种8个,（4）低Ca、B和Mn含量的品种16个。 相似文献
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Foliar samples, SPAD-502 measurements (both along the growing season), and soil samples were taken from protea plants (Leucospermum cordifolium), cultivar ‘High Gold’ cultivated in six commercial plantations of La Palma Island (Canarian Archipelago). Soil data (pH, available P, Ca, Mg, K and Na, and EC) ranged within normal levels for proteas, though O.M. was high. Drainage decreased the potential problem that could be caused by the high clay content of the soils. Leaves showed high concentrations of N, K, Mg, and Na, while Ca and Cu were normal. On the other hand, Fe and Zn presented some low foliar levels, while Mn values fluctuated depending upon the different plantations. N contents were higher in spring, and those of K, Ca, Mg, and Na increased with time. Relative chlorophyll contents (SPAD-502 measurements) were compared with macro- (N, P, Na, K, Ca, Mg) and micro- (Cu, Fe, Mn, Zn) foliar levels. Results showed no positive correlation between leaf chlorophyll and N content. Higher leaf N concentrations were observed in chlorophyll deficient than chlorophyll sufficient leaves at one site and vice versa at another site. In contrast, lower Mn, Fe and Ca concentrations, the last corresponding with higher ratios of N/Ca were observed in chlorophyll deficient than chlorophyll sufficient leaves at several sites. It is concluded that amendment of soils with Mn, Fe and Ca may prevent the development of chlorophyll deficiency symptoms, associated with diminished photosynthetic capacity, in this important commercial cultivar. 相似文献
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A continuous increase in dry matter content in leaves of guava (Psidium guajava L.) was observed when their age increased, and also from the base to the top of the shoot. While the N, P, K, Zn and Cu content decreased, the levels of Ca, Mg, Na and Mn increased when age of leaf increased. With regard to position of leaves on the shoot, the levels of N, Ca and Mg increased from base to top, while the reverse was true for P, K, Na, Zn and Mn. No definite pattern was observed for Cu. Stabilization of all constituents was observed in 5-months old leaves borne on position V from the base of shoot. Thus, while considering the nutrient status of a tree as a whole, leaves of this age and position should be sampled. However, in certain cases the range of period and position for leaf sampling varied with the different elements, e.g. for Ca, 1- to 2-months old leaves should be sampled, while for Mn, leaves should be taken from positions II–IV of the shoot. 相似文献
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《Scientia Horticulturae》2005,106(4):502-514
Flower and foliar nutrient content of ‘Queen Giant’ and ‘Tebana’ peach [Prunus persica (L.) Batsch] on six almond × peach hybrids rootstocks (‘Adafuel’, ‘Adarcias’, ‘GF 677’, ‘Cadaman’, ‘Garnem’ and ‘Felinem’) were determined during one season. The mineral elements analysed were: N, P, K, Ca, Mg, Fe, Mn, Zn, Na and Cu. Leaf N concentration in ‘Queen Giant’ was the highest on ‘Cadaman’ and ‘GF 677’ and the lowest on ‘Adarcias’. The P, Fe and Zn concentrations in flowers and leaves were significantly correlated. The leaf chlorophyll concentration at 120 DAFB was positively correlated with Fe floral concentration and with K, Zn and Na leaf concentration, in ‘Queen Giant’, and with K and Mn leaf concentration, in ‘Tebana’. In ‘Queen Giant’, the greatest trunk cross-sectional area was exhibited with ‘Felinem’ and ‘Garnem’ and the lowest with ‘Adarcias’. In contrast, the greater yield efficiency was found on ‘Adarcias’. In ‘Queen Giant’, a negative correlation was found between yield efficiency and Ca in leaves and in flowers. A positive correlation was observed between tree vigour and flower Fe, flower Ca and leaf Ca concentration. Correlation was also found between yield efficiency and Mg in ‘Tebana’ flowers. In ‘Queen Giant’, ‘Felinem’ rootstock showed the weakest balanced nutritional values (ΣDOP index) compared with other rootstocks. 相似文献
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The influence of various rootstocks on the leaf nutrient composition of mandarin cultivars ‘Coorg’ and ‘Kinnow’ was studied in a rootstock trial at the Indian Institute of Horticultural Research, Hessaraghatta. Differences due to rootstocks in the leaf nutrient composition with respect to N, K, Ca, Mg, Na and Mn were significant. Leaf N content was higher on the rootstocks ‘Trifoliate’ orange and ‘Carrizo’ and ‘Troyer’ citranges. ‘Trifoliate’ orange, in addition to being more efficient in absorbing N, also resulted in much lower leaf Na content than the others. Rootstocks ‘Rough Lemon’, ‘Cleopatra’ mandarin and ‘Kodakithuli’ were more efficient in absorbing cations Ca, Mg and K. The citrange rootstocks ‘Carrizo’ and ‘Troyer’ resulted in a very low content of leaf Mn, indicating that these may be particularly suitable in high-Mn and highly acidic soils.Significant differences in the leaf nutrient composition with respect to all the nutrients excepting N, P and Cu were observed between the 2 scion cultivars. ‘Kinnow’ mandarin appeared to have a much lower requirement both for Zn and Fe, which makes it more suitable on soils with a high pH. 相似文献