期刊名称：World Food Aid Needs and Availabilities. Food Security Assessment
出版年度：2001
卷号：12
页码：24-24
出版社：U. S. Department of Agriculture
摘要：Raising agricultural productivity improves food security both through increased
incomes for farmers and through increased food supplies for consumers. Productivity
depends in turn on a variety of factors, including the quantities of fertilizer, water, and other
inputs used in agricultural production. Recent advances in data and analysis show how productivity
also depends critically on the quality of inputs used, including the quality of natural
resources such as land. Within Sub-Saharan Africa, the productivity of agricultural land is
found to be 28 percent higher in countries with favorable soils and climate than it is in countries
with poor land quality, everything else being equal, and in Asia the difference is 34 percent.
Productivity is especially responsive to increases in the use of fertilizer and irrigation
in countries with poor land, while productivity in countries with good land is more responsive
to improvements in labor quality and transportation infrastructure. Reductions in the
incidence of armed conflict are important in both sets of countries.
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