Agriculture and Environment最新文献_第2页

“Agriculture and environment” becomes a new journal 《农业与环境》创刊

Agriculture and Environment Pub Date : 1982-11-01 DOI: 10.1016/0304-1131(82)90011-X

T.L.V. Ulbricht

引用次数: 0

Growth impact of O3, NO2 and/or SO2 on Platanus occidentalis O3、NO2和/或SO2对西侧柏生长的影响

Agriculture and Environment Pub Date : 1982-11-01 DOI: 10.1016/0304-1131(82)90019-4

L.W. Kress , J.M. Skelly , K.H. Hinkelmann

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引用次数: 11

Effectiveness of Rhizobium and VA Mycorrhiza in the introduction of Hedysarum coronarium in a new habitat 根瘤菌和VA菌根在新生境中引种的效果

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90008-X

C. Azcon-Aguilar, J.M. Barea, R. Azcon, J. Olivares

引用次数: 21

Transport and fixation of phosphate in acid, homogeneous soils II. Computer simulation 磷酸盐在酸性均匀土壤中的迁移和固定2。计算机模拟

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90005-4

P. De Willigen, P.A.C. Raats, R.G. Gerritse

引用次数: 12

Agricultural structure, agricultural policy, and environmental quality: Some observations on the context of agricultural research in North America 农业结构、农业政策与环境质量:对北美农业研究背景的一些观察

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90001-7

Frederick H. Buttel, Michael E. Gertler

{"title":"Agricultural structure, agricultural policy, and environmental quality: Some observations on the context of agricultural research in North America","authors":"Frederick H. Buttel, Michael E. Gertler","doi":"10.1016/0304-1131(82)90001-7","DOIUrl":"10.1016/0304-1131(82)90001-7","url":null,"abstract":"<div>This paper discusses how the context of agricultural research in North America is shaped by the structure of agricultural production, by agricultural policy, and by the nature of agricultural research institutions. Our principal concerns are: (1) the historical influences of agricultural research on the structure of agricultural production and on resource management in North American agriculture, and (2) the constraints on agricultural research institutions in developing technologies which will facilitate the husbanding of agroecosystems. We argue that the autonomous role of agricultural research in shaping the structure of agriculture and in causing degradation of agricultural resources is often overestimated; for example, the principal dynamics of change in North American agriculture were apparent well before the surge of productivity-oriented agricultural research after World War II. We also suggest that the nature of North American agricultural structure and historical and contemporary agricultural policies have decidedly influenced the context of agricultural research and have led to a number of major barriers to more beneficent management of agricultural resources. The distinctive characteristics of North American agricultural research institutions are emphasized, particularly those characteristics such as the decentralized nature of agricultural research in conjunction with the often invisible power of professional scientific organizations that limit the ability of research institutions to develop innovative approaches to agricultural resource management. Nonetheless, we argue that the major burden of environmental protection in agriculture cannot be placed on agricultural research institutions, since these institutions will have relatively little leverage over the key forces — the nature of agricultural structure and deleterious public agricultural policies — which lead to degradation of agroecosystems.</div>","PeriodicalId":100064,"journal":{"name":"Agriculture and Environment","volume":"7 2","pages":"Pages 101-119"},"PeriodicalIF":0.0,"publicationDate":"1982-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-1131(82)90001-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82563599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Transport and fixation of phosphate in acid, homogeneous soils III. Experimental case study of acid, sandy soil columns heavily treated with pig slurry 磷酸盐在酸性均匀土壤中的迁移和固定III。猪浆处理酸性、砂土柱的试验研究

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90006-6

R.G. Gerritse, P. De Willigen, P.A.C. Raats

引用次数: 15

Remote sensing for agricultural research and monitoring operations 用于农业研究和监测业务的遥感

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90002-9

R.V. Birnie, R.A. Robertson, G.C. Stove

引用次数: 4

Transport and fixation of phosphate in acid, homogeneous soils I. Physico-mathematical model 磷酸盐在酸性均匀土壤中的迁移和固定1 .物理数学模型

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90004-2

P.A.C. Raats, P. De Willigen, R.G. Gerritse

引用次数: 16

Tropical rainfall variability — The agroclimatic impact 热带降雨变率-农业气候影响

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90003-0

S. Nieuwolt

{"title":"Tropical rainfall variability — The agroclimatic impact","authors":"S. Nieuwolt","doi":"10.1016/0304-1131(82)90003-0","DOIUrl":"10.1016/0304-1131(82)90003-0","url":null,"abstract":"<div>In tropical lowlands, agriculture is largely controlled by rainfall conditions. In these areas, most elements of climate, and particularly temperatures, are very uniform both over place and time, but rainfall is much more variable. Lack of sufficient rainfall is the main limiting factor in agriculture in most tropical areas. Long-term predictions, expected from agroclimatologist, should be mainly concerned with rainfall, but the irregularity of this element makes this a difficult task.Therefore an obvious need exists for methods to quantify rainfall variability in relation to agriculture. These methods should be simple, so that they can be used wherever necessary without the use of a computer. Peninsular Malaysia offers favourable conditions for the study and application of these methods.Annual rainfall totals present a picture of endless variations, with no clear trend or cycles. The seasonal rainfall distribution is much more regular, as large-scale weather patterns are frequently controlled by the monsoonal wind systems. Agricultural conditions determined by seasonal rainfall can be described most conviniently by probability figures. When these are related to crop water needs, as is done in the Agricultural Rainfall Index, the risk of droughts can be indicated accurately enough for most agroclimatic purposes. The proper selection of crops and correct timing of planting can also be decided by this method.The irregularity of rainfall from day to day affects the growth and yields of many crops, particularly those with shallow root systems. Even during seasons which are generally considered favourable for crop production, temporary shortages or surpluses of rainfall occur often. To obtain estimates of these effects a daily water-balance model is introduced. Risks are indicated by the number of days with severe moisture stress and by the amount of surplus rain water. A comparison with a more sophisticated computer programme shows the validity and accuracy of the model.</div>","PeriodicalId":100064,"journal":{"name":"Agriculture and Environment","volume":"7 2","pages":"Pages 135-148"},"PeriodicalIF":0.0,"publicationDate":"1982-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-1131(82)90003-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79276571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Selective effects of insecticides on within-species variation: The lessons to be learnt when considering the environmental effects of pollutants 杀虫剂对种内变异的选择性影响:在考虑污染物对环境的影响时应吸取的教训

Agriculture and Environment Pub Date : 1982-06-01 DOI: 10.1016/0304-1131(82)90007-8

John Baker

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引用次数: 11