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1.
我国大豆主要矿质元素含量及其地区差异 总被引：1，自引：0，他引：1
地我国不同地区９０个大样本９种元素含量分析结果表明偿同地区大豆元素含量有差异,某些元素含量变化具有一定的地理分布规律,黄淮海地区大豆Ｃａ含量高,Ｚｎ和Ｐ含量由北向南递增,Ｂ含量北方高于南方。９种元素含量依次为Ｋ〉Ｐ〉Ｃａ〉Ｍｇ〉Ｆｅ〉Ｚｎ〉Ｍｎ〉Ｂ〉Ｃｕ。大豆中Ｚｎ与Ｐ、Ｆｅ、Ｍｇ含量呈显著或极显著正相关,与Ｋ、Ｃａ、Ｂ呈极显著负相关;Ｍｇ与Ｍｎ呈显著正相关;Ｂ与Ｃａ呈极显著正相关,与Ｚｎ、Ｐ呈极 相似文献
2.
紫花芒果NPK CaMg叶片诊断的DRIS标准初步研究 总被引：6，自引：0，他引：6
按诊断与推荐综合系统标准建立的常规方法，通过比较低产和高产组叶片Ｎ，Ｐ，Ｋ，Ｃａ，Ｍｇ养分含量以及两元素间的养分比和养分积，初步筛选出Ｎ／Ｐ，Ｎ／Ｋ，Ｎ／Ｃａ，Ｎ／Ｍｇ，Ｋ／Ｐ，ＣＰ，Ｐ／Ｍｇ，Ｋ／Ｃａ，Ｋ／Ｍｇ和Ｃａ／Ｍｇ作为ＤＲＩＳ参项，并初步提出紫花芒果ＤＲＩＳ诊断标准。 相似文献
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粤东龙眼立地土壤养分限制因素系统调查 总被引：3，自引：1，他引：2
用“土壤发状况系统研究法”对粤东８片龙眼园土壤进行大、中、微量营养元素含量测量、土壤吸附试验及盆栽诊断试验。结果表明,全部供试土壤均缺Ｎ和Ｐ,８８％土壤缺Ｋ和Ｍｇ和７５％土壤缺Ｃａ和Ｓ,６３％土壤缺Ｃｕ,５０％土壤缺Ｂ。在缺素土壤中 不配施这些元素,指示作物的干的产量分别下降Ｎ６０．３％,Ｐ６５．３％、Ｋ２９．５％,Ｃａ４６．２％,Ｍｇ３３．５％,Ｃｕ１９．３％,Ｓ１７．９％,Ｂ１５．５％,综合各 相似文献
4.
对河北省元氏县有仙乡微地域环境内不同地貌土壤中的营养元素进行了分析评价，查明有效态Ｎ含量低，Ｐ含量较低，６种微量营养元素亦严重缺乏。其中有９０５以上的土壤缺Ｚｎ，Ｍｎ，８０％以上的土壤缺Ｍｏ，Ｂ，６０％以上的土壤缺Ｃｕ，Ｆｅ，相关统计分析表明，土壤有效态元素含量低与有机质含量低呈显著相关，不同地形影响的土壤类型差异亦是造成土壤肥力不同的重要因素。 相似文献
5.
土壤养分状况系统研究法在高产平衡施肥中的应用 总被引：3，自引：0，他引：3
应用土壤养分状况系统研究法对河南省主要土壤进行化学分析、吸附试验、盆栽试验和田间校验研究。结果表明：河南省作物高产的养分限制因子主要是Ｎ、Ｐ、Ｋ、Ｓ、Ｚｎ、Ｂ、Ｃｕ、Ｍｎ、Ｆｅ和Ｍｇ，在某些土壤上也限制作物生长。施用含这些元素的肥料对作物有明显增产效果。在一年两作高产平衡施肥时，应综合考虑Ｎ、Ｐ、Ｋ的适宜用量和比例，中、微量元素的配合，前茬施肥后效，以取得高产和较高的经济效益。 相似文献
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通过对华北平原２４个石灰性土壤（褐土、褐潮土、潮土）的研究表明，ＩＣＰ光谱仪可准确地分析ＮａＨＣＯ３－ＤＴＰＡ（即ＳＢ／Ｄ）联合浸提剂所浸提的Ｐ、Ｋ、Ｃａ，Ｍｇ，Ｓ，Ｆｅ，Ｚｎ，Ｍｎ，Ｃｕ，Ｂ１０种养分元素和Ｐｂ，Ｃｄ，Ａｓ，Ｓｅ４种有毒元素的含量，用ＳＢ／Ｄ联合浸提剂－ＩＰＣ光谱仪联用技术测定上述元素在各供试土壤中的有效含量，与分栽试验中空白处理的植物地上部化学元素吸收量，常规化学分析方法的测定 相似文献
8.
磷锌施用量对苗期玉米吸收ZnCuMn的影响 总被引：8，自引：0，他引：8
在温室条件下，以石灰性褐土和玉米为试验材料，研究了汪同Ｐ，Ｚｎ施用量对玉米苗期吸收Ｚｎ，Ｃｕ和Ｍｎ的影响，结果表明，农作物对营养元素的吸收是有平衡要求的，相互促进，相互制约，满足作物对大量元素供给，是发挥微量营养元素作用的前提，而过量的微量元素，则有可能成为有害因子危害作物的正常生长发育。 相似文献
9.
山西省褐土施用钾肥对谷子养分吸收及产量形成的影响 总被引：2，自引：0，他引：2
本文选用具有代表性两种母质发育的褐土进行盆栽试验。结果表明,红土母质褐土施钾在拔节期谷子对Ｎ、Ｐ、Ｋ、Ｃａ、Ｍｇ、Ｆｅ、Ｍｎ、Ｃｕ和Ｚｎ的吸收均有促进作用,而在黄土母质褐土上谷子对Ｃａ、Ｍｇ和Ｍｎ的吸收都随施钾量增加而下降。施钾对谷子苗期生长发育有明显的促进作用,有助于谷子穗分化,增加千粒重,加速光合产物的运输,提高谷子产量。 相似文献
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李营养累积、分布及叶片养分动态研究 总被引：9，自引：0，他引：9
基于保障生态和果品安全以及合理实施果园养分管理的前提,对大石早生李树体各部位营养元素积累、分布以及各营养元素的周年变化规律进行了分析.结果表明:①营养元素在各个器官的相对含量,除K、Zn在果实中含量最高外,N、P、Ca、Mg均以叶片中含量为最高,以叶片做营养诊断是适宜的.②大石早生李树体营养元素N、P、K、Ca、Mg、Fe、Zn的元素比值为10.00:1.26:6.42:12.57:2.46:1.87:0.14.⑧100 kg鲜果的养分吸收量分别为:N 772.47g,P74.25 g,K 730.33g,Ca874.16 g,Mg 169.82 g,Fe 66.05 g,Zn 7.53 g,N:P:K的比例为1.00:0.10:0.95.④N、P、K、Ca、Mg、Fe、Zn、Mn、Cu的含量随物侯期呈规律性变化.生长季初期,N、P、K、Zn、Cu的含量迅速下降,Fe、Mn、Ca、Mg呈逐渐上升的趋势;中期这9种元素总体变化幅度较小;后期Fe,Cu.N、P、K的含量呈下降趋势,Mn、Zn、Ca,Mg依然上升.本结果既丰富了国内李营养理论,同时又为制定合理的施肥措施及建立绿色优质果品科技示范基地提供了理论依据. 相似文献
12.
The dry weight accumulation per male and female flower as well as the concentration per gram of dry weight and the accumulation of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), zinc (Zn), and copper (Cu) were determined in walnut tree (Juglans regia L.) catkins and female flowers at the stage of flower bud and during the flower development. Catkin emergence was accompanied by a very fast hydration of the tissues. After the catkin matured, the fresh and dry weights were reduced. The female flower development period was accompanied by the dry and fresh weight increase. Total N, P, K, Fe, Mn, Cu and Zn concentrations in catkin buds were detected at lower levels, Mg in equal levels, and Ca at higher levels as compared to the nutrient concentrations in young growing leaves. The estimated values of the ratio NCmfb/NCygl were: total N = 0.54, P = 0.83, K = 0.56, Ca = 1.5, Mg = 1.0, Fe = 0.46, Mn = 0.71, Cu = 0.85, and Zn = 0.60. Nutrient concentration in female flower buds was detected in almost equal levels with the exception of total N and Fe. The estimated values of the ratio: NCffb/NCygl were: total N = 0.57, P = 1.1, K = 1.17, Ca = 1.06, Mg = 0.9, Fe = 0.47, Mn = 1.0, Cu = 0.92, and Zn = 0.85. Total N, P, Mn, Cu, and Zn accumulations in the catkin were increased during the fast growing phase and decreased after catkin maturing. Potassium, Mg, and Fe accumulation continued to increase in the mature catkin. Calcium accumulation decreased at a very late mature catkin phase. Total N, P, and K accumulation rates during the catkin fast growing phase were higher than the dry weight accumulation rate. Calcium, Mg, Fe, Mn, Cu, and Zn accumulation rates at the same period were lower or equal to dry weight accumulation rates. In mature catkins, the total N, P, Mn, Cu, and Zn depletion rates were higher than the dry weight depletion rate. The continual increase of K, Ca, Mg, and Fe accumulation in mature catkin resulted in the increase of nutrients concentration also. Total N and P showed the highest remobilization values from mature catkin of 51.4% and 45%, respectively. Calcium, K, Mg, Cu, Mn, and Zn remobilization values estimated to be 22.1%, 7.5%, 3.2%, 45.3%, 33.4%, and 31.8%, respectively. Iron showed no remobilization at all. Nutrients remobilization from catkins as compared to the leaves had almost similar values for total N, Zn, and Cu, higher for P, Ca, and Mn, and lower for Mg, Fe, and K. Accumulation of all nutrients in female flowers increased after fertilization. The dry weight accumulation rate was higher than the nutrient accumulation rates. 相似文献
13.
Giertych Marian J. Karolewski Piotr de Temmerman Ludwig O. 《Water, air, and soil pollution》1999,110(3-4):363-377
Changes of phenolics and chemical elements [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), manganese (Mn), iron (Fe), boron (B), copper (Cu), zinc (Zn), lead (Pb), cadmium (Cd), chromium (Cr), nickel (Ni) and cobalt (Co)] content in needles of black pine ( Pinus nigra) as dependent on age of needles (5–6 classes) and pollution were examined. The content of ortho-diphenols (o-dPh) and total phenols (TPh) was significantly higher at a polluted site than at a control one. It increased with age of needles at both sites. At the polluted site contents of N, K, Mg in black pine needles were lower and of Fe, Ni and F were higher than at the control site. An increase of content with age of needles at both sites was detected for Ca, Fe, B and F, and a decrease for N, P, K, Cu and Ni. The content of elements in different age classes of needles is connected with their mobility. The content of phenolics is negatively correlated with main nutrients and positively with some toxic elements. 相似文献
14.
《Communications in Soil Science and Plant Analysis》2012,43(6):533-549
Abstract Differences in elemental content of pecan [Carya illinoensis (Wang.) K. Koch] leaves among cultivars were found for N, P, K, Ca, Mg, Mn and Zn. Of the 7 elements studied, only leaf K indicated a date by cultivar interaction. Differences in leaf K among cultivars became greater as the season progressed. Increasing rate of application of N‐P‐K fertilizer increased leaf N, Ca, Mn, and Al, but had very little or erratic effect on leaf P, K, Fe, B, Cu, Zn, and Sr. There were very few consistent significant fertilizer rate by date interactions for the 13 elements tested. Seasonal trends for element leaf contents from mid‐May through October were generally downward for N, upward for Ca, Mn, Fe, B, Cu, Al, and Ba and changed very little for Mg, Zn, and Sr. Leaf P and K responses to sampling date varied with year. Large year to year variations in leaf trends over dates suggests difficulty in selecting a period for leaf sampling where little change in leaf levels consistently occurs. 相似文献
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The dry weight accumulation per leaf as well as the concentration per gram of dry weight and the accumulation of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), zinc (Zn), and copper (Cu) were determined in walnut tree leaves (Juglans regia L.) during a complete life cycle. Additionally, the dynamics of plant nutrient concentration in leaf petiole sap and carbohydrate accumulation in leaves were studied in relation to the main life cycle events of the walnut tree. Total N, P, K, Cu, and Zn concentrations decreased, whereas that of Ca, Mg, and Mn increased during the season. Iron concentration fluctuated around a mean value. Total N, P, K, Mg, and Cu concentrations detected in younger mature leaves were at the sufficient level, whereas Ca, Fe, Mn, and Zn concentrations were at higher levels as compared to those previously reported. All the detected nutrient accumulations increased abruptly during leaf ontogeny and leaf maturation until a maximum level was attained in the younger mature leaves. Similarly, sucrose, glucose, and fructose accumulation were observed at the same period. The rates of total N, P, Cu, and Zn accumulation were lower than the rates of the observed dry matter accumulation and nutrient concentration dilution. Potassium and Mn accumulation rates were almost equal, whereas those for Ca and Mg were higher as compared to the dry matter accumulation rate. The fast embryo growing phase resulted in a considerable decrease in dry weight, total N, P, K, Cu, Zn, and carbohydrate accumulation, and to a lesser degree in Ca, Mg, and Mn accumulation. Nutrient accumulation reduction in leaves by the influence of the growing fruits were estimated to be: total N 52%, K 48%, P 29.5%, Mg 16.3%, Ca 15%, Fe 51.2%, Cu 55.2%, Zn 37.3%, and Mn 5.4% of the maximum nutrient value of the younger mature leaves. Old leaves preserved nutrients before leaf fall as follows: total N 25.4%, P 45%, K 31%, Ca 74.8%, Mg 76.5%, Mn 89.2%, Fe and Zn 50%, and Cu 37%. Nutrient remobilization from the senescing old leaves before leaf fall were: total N 22.6%, P 25.5%, K 21%, Ca 10.2%, Mg 7%, Fe 3.2%, Mn 5.4%, Cu 8%, and Zn 13.3% of the maximum value in the younger mature leaves. In early spring, the absorption rates of N, P, and Ca were low while those of Mg, Fe, Mn, Cu, and Zn were high. During the fast growing pollen phase, the N, P, Fe, Mn, Cu, and Zn concentrations were reduced. Calcium concentration is supposed to be more affected by the rate of transpiration rather than during the growing of embryo. Calcium and Mg concentrations in the sap were negatively correlated. The detected K concentration level in the sap was as high as 33 to 50 times that of soluble N, 12 to 21 times to that of P, 5 times to that of Ca, and 10 to 20 times to that of Mg. The first maximum of starch accumulation in mature leaves was observed during the slow growing embryo phase and a second one after fruit ripening. Old senescing leaves showed an extensive carbohydrate depletion before leaf fall. 相似文献
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Victor Manuel Mendoza-Castillo Joel Pineda-Pineda Eduardo Hernández-Arguello 《Journal of plant nutrition》2019,42(11-12):1350-1365
In this investigation the extraction curve of macronutrients (N, P, K, Ca, Mg) and micronutrients (Fe, Cu, Zn and Mn) were determined in the cultivation of fig. A system of intensive production of fig in greenhouse and hydroponics was established with 1.25 plants m?2. The determination of the nitrogen content was done by the micro-Kjeldahl method. The P was by the yellow molybdovanadate method throughon a spectrophotometer. The K was determined by flamometry and the Ca, Mg, Fe, Cu, Zn and Mn were determined by atomic absorption spectrophotometry. Of the organs analyzed, the stem was the that accumulated more dry matter, then, the leaves and finally the fruits. The nutrient extraction dynamics presented similar upward behavior in all nutrients. The demand for macronutrients in decreasing order was N?>?K?>?P?>?Ca?>?Mg and for the micronutrients Cu?>?Fe?>?Mn?>?Zn. 相似文献
18.
攀西烟区紫色土pH值与土壤养分的相关分析 总被引：5，自引：1，他引：5
对四川攀西烟区有代表性的30个紫色土样品的pH值、有机质及有效养分含量进行了测定。结果表明，攀西烟区紫色土的pH值在5．13～8．14范围内，有半数左右的土壤偏碱性；有机质、碱解氮、有效锌和有效锰的含量均随pH值的升高而降低，交换性钙的含量随pH值的升高而升高，而pH值与速效磷、速效钾、交换性镁、速效铜、速效硼间的相关性则不显著。烟区紫色土的有机质和碱解氮含量偏低，速效磷、速效钾含量中等，交换性钙、交换性镁含量丰富；部分pH值较高的土壤可能会缺乏铜、锌等微量元素；在不同pH值的土壤上硼营养均严重亏缺，建议生产中增施硼肥。 相似文献
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P. J. Hocking 《Journal of plant nutrition》2013,36(9):1753-1774
A study was made of the effects of soil salinity on dry matter production, grain yield, and the uptake, distribution and redistribution of mineral nutrients in irrigated grain sorghum. Soil salinity (EC, 3.6 mS/cm) reduced seedling establishment by 77%, and dry matter and grain yields per plant by 32%; grain yield/ha was reduced by 84%. Salinity reduced grain number per head, but not individual grain size. The accumulation of dry matter and most nutrients was reduced by salinity, but the distribution and redistribution of nutrients within the plant were largely unaffected. Redistributed dry matter provided 52 and 31% of the grain dry matter for control and salt‐affected plants, respectively. Salt‐affected plants had a greater proportion of their sulfur (S), magnesium (Mg), sodium (Na), and chloride (Cl) in stems and leaves than control plants at maturity. Grain had 50–90% of the nitrogen <N), phosphorus (P), S, and Mg, 20–50% of the potassium (K), manganese (Mn), zinc (Zn), and copper (Cu), but < 20% of the calcium (Ca), Na, Cl, and iron (Fe) contents of the whole plant. Over 65% of the N and P, and from 20 to 30% of the K, S, Mg, Cu, and Zn was redistributed from the stem and leaves to grain. There was no redistribution of Ca, Na, Cl, Fe, and Mn. Leaves were more important than the stem as a source of redistributed N, but the leaves and stem were equally important as sources of redistributed P, K, S, Mg, and Cu. Redistribution from the stem and leaves provided 80% of the K and 20–50% of the N, P, S, Mg, Zn, and Cu accumulated by grain. Concentrations of Na, and especially Cl, were high in vegetative organs of salt‐affected plants, but not in grain. It was concluded that although moderate salinity was detrimental to the establishment and yield of grain sorghum, it had little effect on patterns of distribution and extents of redistribution of mineral nutrients. 相似文献
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Alfalfa (Medicago sativa L.) yield and nutrient contents may be affected under salinity condition. Thus, this experiment was conducted to determine the effect of three salinity levels (60, 120, and 180 mM NaCl) on shoot and root dry weights, and mineral contents of three alfalfa cultivars. With the increasing salinity levels sodium (Na) and magnesium (Mg) contents increased; but potassium (K), nitrogen (N), phosphorous (P), calcium (Ca), zinc (Zn), and copper (Cu) contents and root and leaf weights decreased; however, changes in these traits depended on cultivar and salinity level. However, Rehnani, a tolerant cultivar, had the lowest Na and Mg contents and the highest K, N, P, Ca, Zn, and Cu contents and dry weights under all of the salinity levels. Moreover, leaf dry weight and leaf P content had the highest correlation with salt tolerance suggesting that these traits may be used as a marker for selecting salts that are tolerant among genotypes in alfalfa. 相似文献