共查询到19条相似文献，搜索用时 359 毫秒
1.
溶液培养条件下研究硼对2个硼效率不同的棉花品种木质部、韧皮部中硼及其它矿质养分运输的影响。结果表明,缺硼使2个棉花品种木质部汁液硼含量及溢出量明显降低,低效品种降低幅度大于高效品种。供硼充足(0.5mg/L)时,2个棉花品种木质部汁液中硼浓度均小于培养液中硼浓度;缺硼(0.002mg/L)时,高效品种与低效品种木质部汁液硼浓度分别是培养液硼浓度的32.0和20.5倍。缺硼使2个棉花品种木质部汁液中钾、锰、铜、锌含量均升高,高效品种升高幅度较大;钙含量均降低,低效品种降低幅度较大;高效品种镁含量增高,低效品种降低。而2个棉花品种木质部各养分(钾、镁、钙、锰、铜、锌)溢出量均降低,低效品种降低更明显。无论在缺硼或供硼充足时,2个棉花品种韧皮部中硼浓度均极低,但韧皮部溢泌液中其它养分受缺硼影响品种间表现不同,高效品种韧皮部钾、镁、锰、铜溢出量升高,低效品种则降低;2个品种钙、锌溢出量均降低,低效品种降低幅度更大。 相似文献
2.
对云南五种植烟土壤上烤烟三个品种、六个生育期烟叶中钾、磷、硫、钙、镁、铁、锰、锌、铜、硼浓度和烟株根区土壤中ＡＢ／Ｄ联合提取的养分含量及土壤ｐＨ、有机质和碱解氮的测试数据，用主组分分析（ＰＣＡ）方法，讨论土壤─烤烟系统矿质营养元素的相互关系及交互作用。结果显示：①烟叶矿质营养元素浓度随烤烟生育期有规律的变化，受根区土壤化学性质影响的变异大于品种间的差异；②烟叶钾、磷、铜、硼表现明显的稀释效应，钙、镁表现积累效应；③烤烟钾、磷、铜、硼营养存在相互协同作用，钙对钾、磷、铜、硼营养有明显的拮抗作用。④增加土壤有机质，利用钾、磷、铜、硼的协同作用，减轻钙对钾、磷、硼的拮抗是改善烤烟营养，提高烤烟产量品质的关键之一。 相似文献
3.
对福建省平和县板仔、文峰、霞寨、小溪、五寨、国强6个乡镇选择有代表性的26个不同树龄(4～10、10～20和20年以上)琯溪蜜柚园采集土壤及叶片样品,分析琯溪蜜柚园土壤肥力及叶片营养随树龄的变化。结果表明,26个琯溪蜜柚园土壤pH值为3.51～5.77,平均为4.26,处于极酸性;土壤碱解氮、速效钾、交换性钙和交换性镁含量均处于缺乏至极缺水平,土壤有效磷、有效铁和有效铜含量处于高量至过量水平,土壤有机质、交换性钙、交换性镁、有效锰含量随树龄增大而显著降低,土壤有效硼含量整体处于缺乏水平且随树龄增大而显著升高。26个柚园叶片钾、钙和镁含量适宜,磷、锰、铜和硼含量偏高至过量,幼龄树(4～10年)叶片氮、铁含量偏高,而低龄(4～10)、成龄(10～20年)树叶片锌含量偏低。由此说明,琯溪蜜柚园土壤肥力随树龄变化明显,其中土壤有机质及有效钙、镁、锰含量随树龄增加显著下降;柚树叶片养分含量随树龄变化不明显,其中磷、硼、锰、铜含量普遍偏高或过量而锌偏低。因此,必须重视投产以及老果园土壤管理,改良酸性,增施有机质,补充钙、镁营养,以保障树体营养平衡和果实品质。 相似文献
4.
重庆市开州区李子营养元素分析及其施肥措施 总被引：1，自引：0，他引：1
《南方农业》2018,(32)
对重庆市开州区6个主要李子园采集的15个叶样的11种营养元素进行分析测定。结果表明,李子叶片中氮、磷、钾、钙、锰和硼元素含量普遍偏高,镁、锌、铜元素含量大部分在适宜指标范围内,普遍缺铁元素。元素含量偏高的李子园氮占100%、磷占100%、钾占60%、钙占93%、锰占73%、硼占60%,缺铁元素的李子园占84%。根据叶片营养丰缺状况配方施肥,调整开州区李子园施肥措施,重点控氮、磷、钾、钙、锰、硼,补铁,从而全面提高开州区李子园产量和质量。 相似文献
5.
温肇穆 《广西农业生物科学》1983,(2)
本文论述了里骆杉木林区十二种营养元素的含量、分布、立地变化、季度变化以及杉木中各种元素含量之间的相互关系。研究结果表明,杉木是强烈积聚钙、磷、锰的,属于N>Ca>K(Mn)型树种。林下植物的营养水平比杉木高得多,特别是钾。在二十四年生杉木中,每公顷贮存的元素公斤数是:氮277、磷29、钾196、钙263、镁53、铁24、锰11、锌0.66、铜0.22、硫22、氯55、硼0.23,元素总量近一半集中于林冠,树干占32％,树根占19％。杉木这十二种元素总贮存量相当于土壤0～80厘米土层相应的可给态元素总量的80％,杉木中的氮、磷、氯占的比例比土壤的速效氮、磷和水溶性氯的大得多,微量元素比土壤相应的可给态元素小得多,其它元素相差不大。同一山坡的土壤中、下中坡的大多数可给态元素显著高于上坡,夏春显著高于秋冬。同一山坡1～2年生杉木枝叶中,大多数元素差异不显著,但下中坡的钙和硼非常显著地高于上坡,夏春金属元素和微量元素显著高于秋冬。当土壤养分供应较好,杉木衰老枝叶向1～2年生枝叶转移的元素量多时,1～2年生枝叶元素含量高,各种元素比例比较协调,杉木生长较好。杉木中的钾、钙、镁、锰、氯、硼彼此之间以及氮—钾、氮—钙、锌—铜之间等都有较好的线性关系。 相似文献
6.
中国烤烟中部叶矿质营养元素浓度状况 总被引：13，自引：1，他引：13
于20012～004年,从重点植烟县采集了410个烤烟中部叶样品,运用ICP测定方法和概率密度分布函数对其氮、钾、磷、钙、镁、硫、锰、铜、锌、硼、钠、铁、氯13个矿质元素的浓度特征进行了分析。结果表明:1)大量元素的变异系数较小,中量元素其次,微量元素较大;2)除氮、镁、硫、铜、锌、钠、铁外,其他元素的浓度在品种之间的差异显著,但不同指标在品种之间的高低秩序不同,例如,云烟87的磷浓度显著地高于云烟85、K326的磷浓度,而钾浓度按K326、云烟87、云烟85依次降低;3)所有元素在省份之间的差异极显著,但不同元素在地区之间的高低秩序不同,例如,河南烟叶的钾浓度显著地低于其他省份,贵州烟叶的氯离子浓度显著地高于其他地方;4)钾、磷、钙、硫、硼、钠在烟叶中的浓度符合正态分布,氮、镁、氯、锰、铜、锌、铁在烟叶中的浓度符合对数正态分布;5)氮、磷、钾、钙、镁、硫、锰、铜、锌、硼、钠、铁、氯的正常浓度范围分别为1.18～2.34、0.11～0.30、0.87～2.83、0.99～3.64、0.1～0.8、0.25～0.9、25.18～601.65、2.1～37.271、3.11～105.421、2.6～55.62、163.02～503.11、97.6～384.2、0.07～0.53(氮、磷、钾、钙、镁、硫、氯的单位为%,其余为mg/kg);6)氮、钾、氯、钾/氯比四个因素符合国际型优质烟叶质量标准的概率只有0.726、0.379、0.193、0.829,目前我国烤烟营养不够协调的主要方面是养分浓度偏低。 相似文献
7.
为摸清重庆垫江柑橘园土壤和叶片营养元素状况,2019～2020年采集了重庆垫江柑橘主产区的118份土壤和130份叶片样品进行养分分析和相关性分析。结果表明:1)pH适宜的土样占94.45%,但是土壤有机质含量适宜的土样仅占33.33%;土壤大量元素碱解氮、有效磷和速效钾含量多数表现偏低,适宜的土壤分别占5.56%、16.67%和33.33%;中量元素交换性钙和交换性镁含量均表现为高量或过量;微量元素有效硼、有效铜、有效铁、有效锌和有效锰含量适宜的土壤分别占16.67%、38.89%、5.56%、27.78%和11.11%,有效锌含量缺乏和低量的样品占72.22%。2)在叶片营养中,大量元素氮、磷和钾含量适宜的样品占比分别为44.62%、53.08%和12.31%,钾表现为缺乏或偏低的样品比例达到87.70%;中量元素钙、镁和硫含量适宜的样品占比分别为68.46%、53.85%和94.61%,且缺乏和过量现象较少;微量元素铁、锰、锌、铜和硼含量适宜的样品占比分别为62.31%、46.15%、3.85%、36.92%和69.23%,锌和铜含量缺乏或低量的样品占比较高。3)土壤pH与有机质和有效养分含量之间存在一定的相关性,其中土壤pH与土壤有效铁、有效锰含量呈极显著负相关,土壤有机质与有效铜含量呈显著正相关;叶片各营养元素间存在一定的相关性,其与土壤营养元素之间也具有一定的相关性。4)不同柑橘品种影响叶片除钾和锌以外的营养元素含量,默科特叶片氮、镁、铁、锰和硼共5个元素的含量均为所有品种中最高。因此,重庆垫江柑橘园根据不同品种和养分情况施肥,注意在土壤中增施有机肥,适量补充氮肥、磷肥与钾肥以及微量元素硼、铜、铁、锌和锰,特别是锌,同时注重叶面适量补充大量元素钾和微量元素锌、锰和铜,为垫江乃至重庆柑橘高产优质和化肥减施增效提供依据。 相似文献
8.
中国稻田土壤有效态中量和微量元素含量分布特征 总被引：1，自引：1，他引：0
基于全国282个水稻土监测点,分析土壤有效态中、微量元素含量及区域特征(东北、长三角、长江中游、西南、华南),结合丰缺标准,揭示中、微量元素丰缺程度。结果表明:东北水稻土交换性镁和有效硼含量高于其他地区,有效锌含量最低;长三角有效锰含量最高、有效硫含量最低;长江中游有效铜含量最高,有效态铁、锰和钼含量最低;西南交换性钙含量高于其他地区,有效铜含量则低于其他地区;华南有效态铁、钼含量均高于其他地区,而交换性钙、镁含量低于其他地区。中国水稻土交换性钙、镁及有效铁、锰、铜含量整体丰富;长三角和华南缺硫水稻土比例分别为42.2%和41.8%;东北、长三角、长江中游、西南和华南缺锌水稻土比例分别为75.0%、52.3%、31.9%、53.2%和10.4%,缺硼分别为38.5%、65.2%、92.2%、88.6%和78.3%,缺钼28.6%、60.4%、82.6%、42.0%和33.4%。可见,东北和长三角水稻土以缺锌为主;长江中游以缺硼、钼为主;西南以缺硼为主;华南以缺硼为主。研究可为全国和区域尺度水稻土中微量元素的管理和合理施用提供依据。 相似文献
9.
不同浓度镁营养液对烟草矿质营养吸收与积累的影响 总被引：1，自引：0，他引：1
采用温室水培的方法,研究了不同的镁素供应水平对烟草主要几种矿质养分的吸收与积累的影响。结果表明,在其它养分形态与浓度一致条件下,随着镁浓度从20mgL-1提高到120mgL-1,烟草生长量呈抛物线型变化,在供镁浓度为40mgL-1时烟株生长及干物质积累量最大。随着营养液中镁浓度由低到高,营养液中镁水平的改变对烟草全株氮含量的影响不明显;烟草全株体内磷、镁含量逐步增加,表现为协同效应;烟草全株中钾含量和锌含量随营养液中镁水平增加而降低,表现为拮抗效应;烟草全株体内钙含量和铜含量的变化趋势分为两个阶段,镁处于低水平时,镁与钙、铜之间表现为拮抗关系,镁处于高水平时,镁与钙、铜之间表现为协同关系。营养液中镁浓度低于40mgL-1时,烟草全株体内氮、磷、钾、钙、锰、镁、锌、铜积累量随着营养液中镁水平的提高逐渐增加,与营养液中镁水平呈正相关关系,营养液中镁浓度高于40mgL-1,烟草全株体内氮、磷、钾、钙、锰、镁、锌、铜积累量迅速下降,表面为负相关关系。烟叶中各元素含量与积累量的变化趋势与整株基本一致。 相似文献
10.
为研究夷陵区柑橘园土壤和叶片营养元素状况及相关性,在柑橘主产区采集了 41个土壤和叶片样品进行养分测定分析。结果表明,1)柑橘园土壤 pH均值 5.5,偏酸性柑橘园占 22%。有机质、碱解氮、速效钾和有效硼处于低量缺乏的比例分别为 33.1%、68.3%、36.6%和 100%,其他土壤养分含量均适宜偏高水平。2)叶片中氮、钾、钙、镁和锌含量缺乏的柑橘园分别占34.1%、87.8%、36.6%、65.9%和95.1%。叶片磷、铁、锰、铜和硼含量在适宜偏高水平。3)土壤碱解氮、交换性钙、交换性镁、有效铁和有效硼的含量与叶片中对应元素存在显著正相关;土壤有效钾和有效铜与叶片对应元素显著负相关;土壤交换性钙与土壤 pH极显著正相关;土壤有机质与土壤碱解氮、交换性镁以及叶片镁极显著正相关。因此建议夷陵区柑橘园应有机无机肥配施,增施硼、锌和镁肥,同时可施用适量石灰改良酸性土壤。 相似文献
11.
《Communications in Soil Science and Plant Analysis》2012,43(11-12):1895-1904
Abstract The effect of treated sewage water on the vegetative and reproductive growth of date palms was assessed. Leaves and fruits samples were collected from locations irrigated with treated sewage (TSW), desalinised, and well water. Samples were analysed for their calcium (Ca), magnesium (Mg), iron (Fe), lead (Pb), copper (Cu), and zinc (Zn) content by atomic absorption spectro‐photometry and for sodium (Na) and potassium (K) by flame photometry. The Mg, Fe, and Zn content of fruits and Na in the leaves were not found to be significantly different. Treated sewage water from University campus utilities significantly increased the Na, K, and Cu and reduced Ca in leaves and Zn in fruits of date palms. But no significant effect was observed on the K, Ca, Mg, and Na contents in fruits of the same palms. The different concentrations of Ca, Mg, Fe, and Zn in the fruits of date palms grown along the same TSW line were attributed to variations in the soil; however, those in Pb content of leaves could be attributed to motor vehicle combustion. The general trend indicated that fruits contained higher K, Na, and Fe contents, but lower Ca, Mg, Cu, Zn, and Pb contents than the leaves. Furthermore, leaves of date palms irrigated with desalinised and well water contained higher Ca and Zn, but lower K, Mg, Na, Cu, Fe, and Pb contents than those of palms irrigated with treated sewage water. Desalinised water reduced the K, Ca, Na, and Zn contents, but it increased the Mg, Fe, Cu, and Pb content of leaves compared to well water. None of the examined metals were found to reach toxic level to man or plant. 相似文献
12.
Correlation analysis of mineral element contents and quality traits in milled rice (Oryza stavia L.)
Jiang SL Wu JG Feng Y Yang XE Shi CH 《Journal of agricultural and food chemistry》2007,55(23):9608-9613
The relationships among potassium (K), calcium (Ca), sodium (Na), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) contents in milled rice (Oryza stavia L.) of 274 genotypes and the relationships between these mineral element contents and other rice quality traits including 3 cooking quality traits, 17 amino acid contents, and protein content were investigated. The results showed that there were significant correlations among most of mineral element contents. Mg, Fe, and Mn contents were significantly correlated with most of the other mineral element contents, while Cu content had significantly negative associations with the K and Mg contents of rice. The relationships between mineral element contents and cooking quality traits showed that gel consistency (GC) was significantly correlated with K, Cu, and Mn contents of rice. Amylose content (AC) was significantly associated with K, Na, Mg, Cu, and Mn contents. The alkali spreading value (ASV) had closely positive relationships with Ca, Mg, and Mn contents. In addition, 8 mineral element contents had obvious correlations with different amino acid contents. Mg, Ca, and Zn contents were significantly correlated with most of the 17 amino acid contents, but Na content did not correlate with amino acid contents except aspartic acid of rice. Furthermore, significant associations were found between protein content and Na, Mg, Zn, Cu, or Mn content. Six principal components were extracted to explain 84.50% of the total variances and contained the information provided by the original 29 variables according to the principal component analysis. 相似文献
13.
我国几种土壤中铁锰结核的元素组成和地球化学特点 总被引：7，自引：0，他引：7
The objective of this research was to isolate a dichlorvos （2,2-dichlorovinyl dimethyl phosphate）-degrading strain of Ochrobactrum sp., and determine its effectiveness in remediation of a dichlorvos-contaminated soil. A dichlorvos-degrading bacterium （strain DDV-1） was successfully isolated and identified as an Ochrobactrum sp. based on its 16S rDNA sequence analysis. Strain DDV-1 was able to utilize dichlorvos as a sole carbon source, and the optimal pH and temperature for its cell growth and degradation were 7.0 and 30 ℃, respectively. Also, the growth and degradation of strain DDV-1 showed the same response to dissolved oxygen. In addition, the soil degradation test indicated that in soil spiked with 100 mg L^-1 or 500 mg L^-1 dichlorvos and inoculated with 0.5% or 1.0% （v/v） strain DDV-1, complete degradation of dichlorvos could be achieved in 24 h. The present study showed that strain DDV-1 was a fast dichlorvos-degrading bacterium in soil. However, further research will be needed to clarify the degradation pathway and the properties of the key enzymes involved in its biodegradation. 相似文献
14.
采用盆栽试验,通过玉米-小麦和大豆-小麦轮作,探讨了不同种植模式中,土壤残留硒锌对小麦产量与营养品质的影响。结果表明,土壤中残留硒锌对小麦生物量和产量的影响与作物轮作体系有关。玉米-小麦轮作,土壤残留硒锌并没有表现出增加小麦产量的趋势,而大豆-小麦轮作,土壤残留硒锌对小麦生物量和产量呈增加趋势。土壤残留硒锌可改变作物体内元素组成。玉米-小麦轮作,土壤残留硒锌有利于小麦籽粒对氮、钾、硫、钙、铁、锌、硒、铜元素的吸收累积。大豆-小麦轮作,土壤残留硒锌促进小麦对钾、硫、镁、铁、锌、硒、铜、锰、硼的吸收,而氮、磷、钙吸收减少。 相似文献
15.
《Communications in Soil Science and Plant Analysis》2012,43(1-2):82-95
Abstract A compost of high copper (Cu) and zinc (Zn) content was added to soil, and the growth of barley (Hordeum vulgare L.) was evaluated. Four treatments were established, based on the addition of increasing quantities of compost (0, 2, 5, and 10% w/w). Germination, plant growth, biomass production, and element [nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sodium (Na), magnesium (Mg), iron (Fe), Cu, manganese (Mn), and Zn] contents of soil and barley were determined following a 16‐week growing period. Following harvesting of the barley, analysis of the different mixtures of soil and compost was performed. Micronutrient contents in soils as affected by compost additions were determined with diethylene–triamine–pentaacetic acid (DTPA) (Cu, Mn, Fe, and Zn) or ammonium acetate [Ca, Na, Mg, K, cation exchange capacity (CEC)] extractions, and soils levels were compared to plant uptake where appropriate. Increasing rates of compost had no affect on Ca, Mg, or K concentration in barley. Levels of Cu, Zn, Mn, and Na, however, increased with compost application. High correlations were found for DTPA‐extractable Cu and Zn with barley head and shoot content and for Mn‐DTPA and shoot Mn content. Ammonium acetate–extractable Na was highly correlated with Na content in the shoot. High levels of electrical conductivity (EC), Cu, Zn, and Na may limit utilization of the compost. 相似文献
16.
The relationships between plant and soil systems were investigated using multivariate statistical methods and relative ionic impulsions. Soil samples were taken from three locations and wild plant species consisted of:Poa, Pteridium aquilinum, Diplotaxis, Plantago lanceolata andTrifolium repens. The content of Mg, Ca, Na, K, Mn, Fe, Pb, Co, Ni, Cu, Zn and Cr in soils and plants was determined. A five-step chemical fractionation procedure (speciation) was applied to soil samples. Total metal contents were determined and amounts extracted with HCl, EDTA and DTPA were measured. Pb, Co, Ni, Cu, Fe, Zn, Cd and Cr in soils (considered as microconstituents for plants) show a greater number of statistically significant relationships with plant contents than those shown by macroconstituents (Mg, Ca, Na, K and Mn). On the other hand, only Zn and Pb extracted with EDTA and DTPA seem to be related to metal contents in wild plants. When using relative ionic impulsions, any soil fraction (obtained from the fractionation procedure, including the soluble fraction, which is the sum of all the fractions except the residual) is suitable for the study of soil-plant system, suggesting a global balance among all the fractions. Our results suggested an active assimilation for K and a passive uptake for Na, Ca and Mn. Furthermore, Fe seemed to favour the active assimilation of the other microelements. 相似文献
17.
Torgny Wiederholm Anne-marie Wiederholm Goran Milbrink 《Water, air, and soil pollution》1987,33(1-2):131-154
The fluxes of metals (Na, K, Ca, Mg, Fe, Mn, Al, Cu, Zn, Pb, Cd, Cr, and Ni) in two spruce forest soils in S. Sweden were quantified using the lysimeter technique. Amounts in precipitation (dry and wet), throughfall, litterfall and annual accumulation in biomass were also quantified, as well as stores in soil and biomass. The metal concentrations of the soil solutions varied greatly according to season. The leaching of some metals (Fe, Cu, Pb, Cr, and organic forms of Al) was associated with the leaching of organic matter. These complexes were leached from the A horizon in considerable amounts. They were precipitated in the upper B horizon and only small amounts were transported further downward. By contrast, the leaching of Na, Mg, Ca, Mn, Cd, Zn, Ni, and inorganic forms of Al increased with increasing soil depth. The concentrations of these metals also increased with increasing soil solution acidity. The highest concentrations were often found at the transition to the C horizon. The amounts of Na, K, Mg, Ca, Mn, Al, Zn, Cd, Cr, and Ni leached from the rooting zone were found to be larger than the amounts deposited from the atmosphere, the main source of these metals being the mineral soil. The reverse was true of Ph, Cu, and Fe, the sink being the upper part of the B horizon. 相似文献
18.
为了解在成龄胶园间作的五指毛桃根际与非根际土壤及其根中主要中、微量元素含量情况，测定了实验区根际与非根际土壤各30个和对应五指毛桃根的钙、镁、铁、锰、铜和锌含量，分析了两者之间的关系，并评价了根际与非根际土壤中、微量元素丰缺状况。结果表明，非根际土壤钙、镁、铁、锰含量的平均值都高于根际土壤的，而铜、锌含量的平均值都低于根际土壤的。土壤钙、镁含量80%以上处于缺水平，而铁、锰含量处于丰或很丰水平，铜和锌含量处于适中水平。五指毛桃根际与非根际土壤中、微量元素存在空间上的广泛变异。五指毛桃根中、微量元素的平均值从大到小的排序是钙>镁>锰>铁>锌>铜。土壤中、微量元素与五指毛桃根中相对应的中、微量元素的相关性不强，且表现复杂。本研究结果揭示，在成龄胶园间作五指毛桃应当适量施用钙肥、镁肥和喷施一些铜元素叶面肥，并实行科学施肥，减少养分淋失。 相似文献
19.
重庆市柑橘园土壤养分现状研究 总被引：14，自引：1，他引：13
采集了重庆市柑橘主产区104个柑橘园0~30 cm的土壤样品进行土壤养分状况分析。结果表明,重庆有90.5%柑橘园土壤p H适合柑橘生长;有87.5%的柑橘园土壤有机质含量偏低;土壤速效氮和有效磷缺乏的柑橘园分别占到77.9%和55.8%,土壤速效钾缺乏和过量并存;柑橘园土壤缺乏有效硫、钙、镁、硼、锰、铜、铁和锌的比例分别为24.0%、13.5%、44.2%、92.4%、35.6%、45.2%、41.3%和72.1%;部分柑橘园的土壤有效钙、镁、铁、锰和铜含量存在过量现象,分别占所有调查柑橘园的54.8%、6.7%、21.2%、16.4%和4.8%;除土壤p H与有效硼外,大部分柑橘园土壤农化样的有机质与其他有效养分含量均高于土壤背景样。因此,该区柑橘生产需根据果园所处地形、土壤养分与管理措施等条件合理施肥,建议在柑橘园增施硼、锌肥,同时要控制含微量元素的农药施用量。 相似文献