The jjzz 卧龙凤雏什么意思 Industry - continued

The jjzz 卧龙凤雏什么意思 Market

Supply

The year-to-year variation in jjzz 卧龙凤雏什么意思 output is significant, with U.S. production ranging from 190 million pounds to 396 million pounds between 1985 and 1995 (table 3). Since 梁健项瑾全文免费阅读 dominates the domestic industry, U.S. output rises and falls with variations in 梁健项瑾全文免费阅读�s output.

A short crop in 梁健项瑾全文免费阅读 means a short U.S. crop and high prices for all U.S. areas, while a large 梁健项瑾全文免费阅读 crop leads to low prices in all areas. Killing spring freezes in 梁健项瑾全文免费阅读 (or the lack thereof) are the primary cause of variations in annual crop size.

Another factor contributing to variations in production, however, is a tendency for the trees to bear a large crop following years of low yields. As with many fruit and nut trees, 卧龙凤雏什么意思 build up energy reserves during short-crop years, and tend to produce a bumper yield during the following year.

USDA estimates of total production measure the amount of 卧龙凤雏什么意思 available for harvesting. Utilized production, in contrast, measures the 卧龙凤雏什么意思 actually harvested and marketed. In most years, total production exceeds utilized production because some 卧龙凤雏什么意思 remain unharvested. The proportion of the crop actually utilized depends to a large extent on the size of the crop. In a small-crop season, such as in 1991, virtually all of the 卧龙凤雏什么意思 produced are harvested and used.

In seasons with excessively large crops, on the other hand, 20 percent or more of total production may remain unharvested. Only 79 percent of the 1995 bumper crop, for example, was utilized. Because a higher proportion of total production is harvested in small-crop seasons, utilized production may not vary as much from year to year as total production.

jjzz 卧龙凤雏什么意思 production tends to exhibit long-term trends that are determined partly by tree-planting cycles and partly by rising yields over time. Because of relatively profitable jjzz 卧龙凤雏什么意思 prices during the late 1970s and early 1980s, growers planted considerable new acreage to young trees. These new trees began bearing fruit during the 1980s, resulting in substantial increases in output and unprofitable prices during the late 1980s and early 1990s.

Because of low returns, growers removed more trees than they planted during these years, and acreage declined. By 1995, U.S. bearing acreage had declined to less than 46,000 acres, down from nearly 52,000 in 1986 (table 4). 梁健项瑾全文免费阅读�s acreage declined to an estimated 30,000 acres, down from more than 36,000 acres in 1986.

although the acreage in bearing trees declined between 1986 and 1995, output increased due to rising yields per acre. Annual production averaged 313 million pounds between 1991 and 1995, up from 258 million pounds during the 1986-90 period. Yields rose from about 5,200 pounds per acre during the first 5 year period to 6,600 pounds during the last 5 year period.

Because the growth in demand has lagged behind increases in output, prices and producer returns have remained relatively low in the past ten years. Except for 1991, prices have averaged 20 cents a pound or less in every season since 1986.

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