Agro-Ecosystems最新文献_第9页

Fertilizers and soil fertility 肥料和土壤肥力

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90038-X

Herbert H. Koepf

引用次数: 1

Modelling nitrate behaviour in a small catchment, east Devon, UK 模拟硝酸盐行为在一个小集水区，东德文郡，英国

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90037-8

I.D.L. Foster

引用次数: 4

Organic agriculture. Economic and ecological comparisons with conventional methods 有机农业。与传统方法的经济和生态比较

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90039-1

H.H. Koepf

引用次数: 7

Traditional food crop growing in the Yaoundé area (Cameroon) Part I. Synopsis of the system 喀麦隆yound<e:1>地区传统粮食作物的种植。第一部分:系统概述

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90033-0

H.J.W. Mutsaers , P. Mbouémboué, Mouzong Boyomo

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引用次数: 25

Effect of differently managed legumes on the early development of oil palms (Elaeis guineensis Jacq.) 不同管理豆科植物对油棕早期发育的影响

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90036-6

P. Agamuthu , Y.K. Chan , R. Jesinger , K.M. Khoo , W.J. Broughton

{"title":"Effect of differently managed legumes on the early development of oil palms (Elaeis guineensis Jacq.)","authors":"P. Agamuthu , Y.K. Chan , R. Jesinger , K.M. Khoo , W.J. Broughton","doi":"10.1016/0304-3746(81)90036-6","DOIUrl":"10.1016/0304-3746(81)90036-6","url":null,"abstract":"<div>We studied the effects of different covers (none, legume and natural) established in different ways (with legumes only: hand-weeded, hand-weeded plus extra fertilizer, and with pre-emergent application of the herbicide Oxyfluorfen at 0.25 kg active ingredient ha−1), on the first 3.5 years' growth and yield of oil palms (Elaeis guineensis Jacq). Legumes were a mixture of Centrosema pubescens and Pueraria phaseoloides. Natural generation consisted mostly of Nephrolepis biserrata and Paspalum conjugatum. Early rates of growth of the palms (as measured by frond area, girth, height, etc.) were greatest in the bare plots and the first yields of fresh fruit bunches were significantly higher than with any other treatment. On the other hand, relative growth rates and net assimilation rates were higher in legume plots (particularly those established with Oxyfluorfen) throughout most of the experimental period. This means that the rate of growth of palms in legume treated plots steadily overtook the rate of growth of those in bare plots. Presumably, these differences resulted from rapid exploitation of soil nutrients by palms in bare plots, and the “banking” of these same nutrients in legume plots.</div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"6 4","pages":"Pages 315-323"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90036-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77980798","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: 4

Agricultural wastes 农业废物

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90040-8

Pierre Jacquard

引用次数: 0

The Egyptian agro-ecosystem at the end of the eighteenth century — An analysis based on the ‘description de l'Egypte’ 18世纪末埃及的农业生态系统——基于《埃及描述》的分析

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90035-4

G. Stanhill

引用次数: 3

Handbook of tropical forage grasses 热带牧草手册

Agro-Ecosystems Pub Date : 1981-01-01 DOI: 10.1016/0304-3746(81)90043-3

J.B. Hacker