World Grain Chinese - July 2008 - 13

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40%。
美国一直曾是世界上最大的大豆出口国,直
到近几年,才落后于巴西位居第二。最近几年,
大豆、豆粕和豆油的出口总量也被阿根廷超过。
美国玉米产量长期主导着世界贸易市
场。2006年,美国玉米出口量为5500万吨,为美
国总产量的20%,占世界玉米贸易总量的三分之
二。据USDA,2006-07年度美国玉米总产量增
加18%,但出口量比上年度减少了9%,这是由
于一部分准备出口的玉米用于乙醇的生产,这种
趋势将会继续加剧。发展中国家的肉类消费在增
加,尽管饲料价格的增长使这种消费增加放缓,
但世界玉米贸易总量将继续增加,而美国的贸易
总量继续减少。
最近,爱荷华州立大学的农业和农村发展中
心的一项研究预测,因乙醇而导致作物贸易量在
未来10年继续减少。从极端的情况来讲,假定一
桶原油的价格是65~70美元(比美国能源部 预
测的价格高10美元),并且假设有足够多的汽车

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38

36.6

36

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34
32

32

31.7

30

30.6

28 28.5
26
24
22

27.2
24.4

24.9

23.2
94/95

96/97

98/99

小麦

00/01

02/03

䘘伂

04/05

06/07

⮶廕

来使用所生产的乙醇燃料。石油价格能保持玉米
价格在4.4美元/蒲式耳(173美元/吨),从而保
证每年能生产300亿加仑的乙醇,需要消耗美国
所生产的所有玉米,这与布什总统在早些时候演
讲的目标(350亿加仑乙醇)相吻合。
研究表明,即使玉米种植面积增加25%,达
到4500万公顷,到2016年玉米的出口量也会减少
45%。大豆的种植面积将会从3000万公顷减少到
2100万公顷,出口量也将会减少46%。小麦种植
面积也会加速减少,出口量将减少到1300万吨,
约为现有出口量的一半。
基于更保守的估计,若石油的价格更低,玉
米价格为每蒲式耳3.40美元,每年生产150亿加
仑乙醇,也仅仅是上述各种预测下降幅度会变得
少一些。
饲料和磨粉
贸易平衡的正面影响是玉米乙醇生产的副产

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19

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World Grain Chinese - July 2008

Table of Contents for the Digital Edition of World Grain Chinese - July 2008

Contents
World Grain Chinese - July 2008 - 1
World Grain Chinese - July 2008 - 2
World Grain Chinese - July 2008 - 3
World Grain Chinese - July 2008 - Contents
World Grain Chinese - July 2008 - 5
World Grain Chinese - July 2008 - 6
World Grain Chinese - July 2008 - 7
World Grain Chinese - July 2008 - 8
World Grain Chinese - July 2008 - 9
World Grain Chinese - July 2008 - 10
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World Grain Chinese - July 2008 - 13
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World Grain Chinese - July 2008 - 34
World Grain Chinese - July 2008 - 35
World Grain Chinese - July 2008 - 36
World Grain Chinese - July 2008 - 37
World Grain Chinese - July 2008 - 38
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World Grain Chinese - July 2008 - 40
World Grain Chinese - July 2008 - 41
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World Grain Chinese - July 2008 - 44
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