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一、面积和产量五十年代到六十年代初期,世界油(艹才)产量的增长,主要依俈扩大(扌布)种面积,单产的提高并不显著。1952年世界油(艹才)总面积为7650万亩,1962年达到1.14亿亩,增长62%;同期亩产一直仃畄在70斤上下,总产量从5600万担增至8400万担,增长50%。从1962年到1972年的十年中,世界油(艹才)栽培面积略有缩小,为1.05亿亩,总产却达到1.38亿担,比1962年增长64.2%,主要是提高了单产。1972年世界平均亩产91.4斤,比1962年增长25.2%。1976年世界平均单产为111斤。欧洲一些国家单产较高,荷兰亩产油(艹才)346斤,波兰366斤,西德311斤,瑞典258斤,法国254斤。特别值得提出的是加拿大,它是世界油
I. Area and Production From the 1950s to the early 1960s, the increase of output of oil in the world mainly depends on the area expanded and the increase of yield is not significant. In 1952, the total area of oil in the world was 76.5 million mu, up to 114 million mu in 1962, an increase of 62%. In the same period, the output per mu has been 70 kg and the total output has increased from 56 million to 84 million, an increase of 50%. In the decade from 1962 to 1972, the area of world oil cultivation was slightly reduced to 105 million mu while the total output reached 138 million, an increase of 64.2% over 1962, mainly due to an increase in yield. In 1972, the average mu yield in the world was 91.4 kg, up 25.2% over 1962. In 1976 the world average yield of 111 pounds. In some European countries, the yield is relatively high. The Netherlands produces 346 kilograms of oil per kilogram, 366 kilos of Poland, 311 kilos of West Germany, 258 kilos of Sweden and 254 kilos of France. Particularly worth mentioning is Canada, it is the world oil