標(biāo)題: Titlebook: Nitrogen Economy in Tropical Soils; Proceedings of the I N. Ahmad (Chairman, Organizing Committee) Conference proceedings 1996 Kluwer Acade [打印本頁(yè)] 作者: 輕佻 時(shí)間: 2025-3-21 19:06
書(shū)目名稱Nitrogen Economy in Tropical Soils影響因子(影響力)
書(shū)目名稱Nitrogen Economy in Tropical Soils影響因子(影響力)學(xué)科排名
書(shū)目名稱Nitrogen Economy in Tropical Soils網(wǎng)絡(luò)公開(kāi)度
書(shū)目名稱Nitrogen Economy in Tropical Soils網(wǎng)絡(luò)公開(kāi)度學(xué)科排名
書(shū)目名稱Nitrogen Economy in Tropical Soils被引頻次
書(shū)目名稱Nitrogen Economy in Tropical Soils被引頻次學(xué)科排名
書(shū)目名稱Nitrogen Economy in Tropical Soils年度引用
書(shū)目名稱Nitrogen Economy in Tropical Soils年度引用學(xué)科排名
書(shū)目名稱Nitrogen Economy in Tropical Soils讀者反饋
書(shū)目名稱Nitrogen Economy in Tropical Soils讀者反饋學(xué)科排名
作者: Epidural-Space 時(shí)間: 2025-3-21 22:07
Effect of cultivation on the nitrogen fertility of selected agro-ecosystems in South Africa,agro-ecosystems and the rate of loss was rapid during the first few years of cultivation. Thereafter, the rate decreased until an equilibrium was approached. In agro-ecosystems from the warmer, drier regions, an equilibrium was approached much sooner than in agro-ecosystems from the cooler, wetter r作者: LOPE 時(shí)間: 2025-3-22 01:46
Assessment of biological nitrogen fixation,e auto-inhibition of acetylene conversion to ethylene. The ARA technique is therefore not a method of choice for measuring BNF..The xylem-solute technique can be used to measure BNF for those species that produce significant quantities of ureide as product of BNF. Although simple and relatively inex作者: COLIC 時(shí)間: 2025-3-22 08:03 作者: insipid 時(shí)間: 2025-3-22 11:01 作者: 大包裹 時(shí)間: 2025-3-22 15:57 作者: 一致性 時(shí)間: 2025-3-22 21:05
Rational nitrogen fertilization in intensive cropping systems,nt approaches. Soil incubations in the field provide a quantitative approach while soil nitrate tests during the growing season provide a qualitative approach to estimating N mineralization. The plant is the ultimate integrator of N mineralization. Plant N uptake by an unfertilized crop can provide 作者: Biofeedback 時(shí)間: 2025-3-23 00:42
,Nitrogen assimilation by legumes — processes and ecological limitations,fixation by legumes..There is no convincing evidence that N. fixation by legumes is generally limited by energy supply to nodules. On the other hand, N. fixation is often restricted by environmental constraints. Environmental stresses may limit N. fixation of legumes at four different levels: . mult作者: 舔食 時(shí)間: 2025-3-23 02:17 作者: 錯(cuò) 時(shí)間: 2025-3-23 07:51
Brown leaf spot disease and fertilizer interaction in irrigated rice growing on different soil typeof brown leaf spot on irrigated rice at Caroni is influenced by sub-optimal levels paticularly of P. Careful monitoring and managememt of P nutrition is seen as an important part in the overall strategy for controlling the disease.作者: 箴言 時(shí)間: 2025-3-23 11:38
A conceptual assessment of the importance of denitrification as a source of soil nitrogen loss in tagement on C and N turnover. The data analysis also suggests that, just as in temperate regions, denitrification may not be a significant route of N loss from most tropical agricultural systems. However, field studies are necessary to determine if this is actually the case.作者: Arresting 時(shí)間: 2025-3-23 17:33 作者: 陰郁 時(shí)間: 2025-3-23 21:31
Downward movement of nitrate and ammonium nitrogen in a flatland ultisol,Mulch application decreased NH.-N and NO.-N soil levels. Ridging the soil increased downward movement of NH.-N and NO.-N. Under bare-fallowed conditions, downward movement of NH.-N was noted in the 30 to 45 cm soil layer at seven days after fertilization, while under cropped conditions its movement 作者: 縱欲 時(shí)間: 2025-3-23 23:41 作者: Introvert 時(shí)間: 2025-3-24 04:21 作者: GROSS 時(shí)間: 2025-3-24 09:44
M. T. F. Wong,S. Nortcliffe incoherent, leading thus to incorrect explanations. Then, we show that explanations are provided by non-monotonic functions. Indeed, an explanation may no longer be valid if new instances are received. Finally, we provide a novel function that is based on argumentation and that returns plausible e作者: PHAG 時(shí)間: 2025-3-24 13:24 作者: 痛苦一生 時(shí)間: 2025-3-24 17:36
S. K. A. Dansoonal connective are examined, with an emphasis on the nonmonotonic ones. An alternative interpretation of ‘.’ as sets . (in .) rather than cofinite (subsets of .) is examined. For all these modal approaches over ., a decision procedure readily emerges, as the modal logic . of this frame is well-know作者: 享樂(lè)主義者 時(shí)間: 2025-3-24 21:52 作者: 宣誓書(shū) 時(shí)間: 2025-3-25 02:39
C. A. Campbell,Y. W. Jame,O. O. Akinremi,M. L. Cabreraonal connective are examined, with an emphasis on the nonmonotonic ones. An alternative interpretation of ‘.’ as sets . (in .) rather than cofinite (subsets of .) is examined. For all these modal approaches over ., a decision procedure readily emerges, as the modal logic . of this frame is well-know作者: 把…比做 時(shí)間: 2025-3-25 05:02
Robert M. Boddey,Octávio C. de Oliveira,Bruno J. R. Alves,Segundo Urquiagaonal connective are examined, with an emphasis on the nonmonotonic ones. An alternative interpretation of ‘.’ as sets . (in .) rather than cofinite (subsets of .) is examined. For all these modal approaches over ., a decision procedure readily emerges, as the modal logic . of this frame is well-know作者: 吹牛者 時(shí)間: 2025-3-25 07:54
Charles W. Rice,John L. Haviin,James S. Schepersonal connective are examined, with an emphasis on the nonmonotonic ones. An alternative interpretation of ‘.’ as sets . (in .) rather than cofinite (subsets of .) is examined. For all these modal approaches over ., a decision procedure readily emerges, as the modal logic . of this frame is well-know作者: 恃強(qiáng)凌弱 時(shí)間: 2025-3-25 12:52
978-94-010-7264-9Kluwer Academic Publishers 1996作者: 收養(yǎng) 時(shí)間: 2025-3-25 19:36 作者: 結(jié)束 時(shí)間: 2025-3-25 21:00 作者: depreciate 時(shí)間: 2025-3-26 01:54 作者: 侵略 時(shí)間: 2025-3-26 07:10 作者: 商品 時(shí)間: 2025-3-26 10:41
K. R. Kelley,F. J. Stevensonsome uncertainty or some disjunction in the result, which is not representable in classical AFs. For this reason, some of these works require a set of AFs or a set of extensions as the outcome of the operation, somehow to represent a disjunction of AFs or extensions. In parallel, the notion of Incom作者: Inflated 時(shí)間: 2025-3-26 15:26 作者: Density 時(shí)間: 2025-3-26 20:52
C. C. du Preez,M. E. du Toitpens that in the most ‘.’ (least .) .-worlds, . is also true. Another plausible interpretation of ‘.’ introduced in nonmonotonic reasoning dictates that . is true iff . is true in ‘.’ .-worlds. A formal account of ‘.’ in this .-based approach to default reasoning has been given through the usage of 作者: 配置 時(shí)間: 2025-3-26 22:39 作者: Encumber 時(shí)間: 2025-3-27 02:01 作者: 威脅你 時(shí)間: 2025-3-27 08:33 作者: 性別 時(shí)間: 2025-3-27 12:30 作者: Throttle 時(shí)間: 2025-3-27 15:36
Charles W. Rice,John L. Haviin,James S. Scheperspens that in the most ‘.’ (least .) .-worlds, . is also true. Another plausible interpretation of ‘.’ introduced in nonmonotonic reasoning dictates that . is true iff . is true in ‘.’ .-worlds. A formal account of ‘.’ in this .-based approach to default reasoning has been given through the usage of 作者: 擋泥板 時(shí)間: 2025-3-27 20:27
Forms and nature of organic N in soil,ts on microbial activity and nutrient availability. Typically, about one-third of the fertilizer N applied to temperate-zone soils is immobilized and retained in organic forms at the end of the growing season. A significant portion of this newly immobilized N is no more available to microorganisms a作者: BLAND 時(shí)間: 2025-3-27 22:39
Seasonal fluctuations of native available N and soil management implications,ation reflects the net effect of inputs of N from mineralization, fertilizers and the atmosphere, and removal by plant uptake, immobilization, leaching and gaseous losses. The greatest concentrations normally occur during the transition between the dry and wet seasons. In East-Africa, up to 184 kg m作者: ALIEN 時(shí)間: 2025-3-28 04:37 作者: 值得 時(shí)間: 2025-3-28 08:13
Assessment of biological nitrogen fixation,eduction assay (ARA) technique, xylem-solute (or ureide production) method and the use of .N labelled compounds..The TND method relies on a control non-N.-fixing plant to estimate the amount of N absorbed by the fixing plant from soil. It is one of the simplest and least expensive methods, but works作者: NEG 時(shí)間: 2025-3-28 12:50
High productivity analysis of 15N and 13C in soil/plant research,les must be processed to integrate spatial variability. Soil scientists were first to recognise the need for a fast, easy-to-use .N analyser to replace the isotope ratio mass spectrometer (IRMS) and Kjeldahl-Rittenberg sample preparation. Development has since led to a variety of ‘continuous-flow’ m作者: installment 時(shí)間: 2025-3-28 15:16
Adapting the potentially mineralizable N concept for the prediction of fertilizer N requirements,tion of the available N in soils is derived from the mineralization of organic matter. For decades, scientists have attempted to quantify the rate at which soils mineralize N, but the complexity of the N cycle has made this a major task. Further, agronomists have long sought soil test methods that a作者: Deceit 時(shí)間: 2025-3-28 19:11
Field application of the 15N isotope dilution technique for the reliable quantification of plant-as the “N.-fixing” crop and a suitable non-N.-fixing control crop are grown in the same labelled soil and the .N enrichment of the control crop is assumed to be equal to the .N enrichment of the nitrogen (N) derived from the soil in the “N.-fixing” crop. In this case the proportion of unlabelled N bei作者: 溫和女孩 時(shí)間: 2025-3-29 02:32 作者: 約會(huì) 時(shí)間: 2025-3-29 04:35
,Nitrogen assimilation by legumes — processes and ecological limitations,ses ammonium is finally assimilated by the glutamine synthetase (GS)/glutamate synthase (GOGAT) system. NH . produced by nitrogenase in symbiosomes of legume nodules is released into the host cell cytosol where it is incorporated into amino acids and amides. The release of NH. into the cytosol appea作者: 該得 時(shí)間: 2025-3-29 10:05 作者: 滑稽 時(shí)間: 2025-3-29 15:12 作者: 生氣地 時(shí)間: 2025-3-29 18:19
Use of 15N for fertilizer N recovery and N mineralization studies in semi-arid Kenya,in microplots. There was no significant response in yield to fertilizer N and labelled N recovery was low, being 7.5% or less in one season and 17.7% or less in the second season. Samples of Kiboko soil at four different water contents were incubated and the rate of gross N mineralization over 7 day作者: 提名 時(shí)間: 2025-3-29 21:17
Significance of timing and method of N fertilizer application for the N-use efficiency in flooded t urea into floodwater between transplanting and early tillering which is a common practice of farmers. Losses appear predominantly during the first week after urea application. With broadcast and incorporation of N into soil at transplanting losses may be reduced but are still substantial. Deep plac作者: 半球 時(shí)間: 2025-3-30 03:53 作者: canvass 時(shí)間: 2025-3-30 05:05
Soil, plant and atmospheric conditions as they relate to ammonia volatilization,ctor determining air quality and acid rain deposition patterns. Redeposition of atmospheric NH. plays an important role in the N balance of natural ecosystems and has been implicated in forest decline, plant species change and eutrophication of surface water. Much of the N in soil-plant animal syste作者: Factual 時(shí)間: 2025-3-30 08:26 作者: groggy 時(shí)間: 2025-3-30 12:46
The role of , in curbing ammonia volatilization from flooded rice systems, is to be preserved, intensification strategies should rely on integrated nutrient management, making full use of biological nitrogen fixation. The . complex is amongst the most effective systems of fixing nitrogen. In this paper we present evidence from greenhouse studies on the potential of . to c作者: Migratory 時(shí)間: 2025-3-30 20:32 作者: 相一致 時(shí)間: 2025-3-30 22:31 作者: 豐滿有漂亮 時(shí)間: 2025-3-31 01:23 作者: 使出神 時(shí)間: 2025-3-31 08:01
ships, with special reference to tropical soilsand crops in aerobic and anaerobic environments. Use of isotopicallylabelled nitrogen in experimentation, especially in tropicalenvironments, and recently developed analytical techniques for soiland plant materials are presented. An important aspect is 作者: interference 時(shí)間: 2025-3-31 10:09
Conference proceedings 1996h special reference to tropical soilsand crops in aerobic and anaerobic environments. Use of isotopicallylabelled nitrogen in experimentation, especially in tropicalenvironments, and recently developed analytical techniques for soiland plant materials are presented. An important aspect is the emphas作者: Arroyo 時(shí)間: 2025-3-31 15:09
e of information for senior undergraduate and graduatestudents with interest in soil/plant nitrogen inter-relationships, andfor all levels of research workers in these fields.978-94-010-7264-9978-94-009-1706-4作者: EXUDE 時(shí)間: 2025-3-31 19:05
Forms and nature of organic N in soil,oil, emphasizing possible formation pathways, chemical characterization of humic substances through conventional and solid-state techniques, and the fate and composition of newly immobilized N in soil.作者: 音樂(lè)會(huì) 時(shí)間: 2025-3-31 21:40
Use of 15N for fertilizer N recovery and N mineralization studies in semi-arid Kenya,il N supply by gross mineralization were calculated. On average, modelled gross soil N mineralized could supply much (> 69%) of the N removed from the plots. It is suggested that the lack of response to fertilizer N may be explained by the coincidence of a high rate of N mineralization, and increased crop demand, caused by the onset of rain.作者: goodwill 時(shí)間: 2025-4-1 04:51 作者: 人類的發(fā)源 時(shí)間: 2025-4-1 07:48
Nitrous oxide (N2O) emissions from soils in warm climates,ropics are few. Limiting fertilizer application to recommended rates applied at appropriate times and avoiding fallow land wherever practical serves to limit N.O emissions. More specific advice for agriculture in warm climates requires further studies.作者: Fraudulent 時(shí)間: 2025-4-1 10:18
