The debeloping world was investing about 0.5%,or $8 billion a year,of its agricultural gross domestic product(GDP)on research and developed world was spending 2.5% of its GDP.Dr.Fischer said more was needed from all countries.
He said crop research could produce technologies that spread across many countries,such as wheat production research having spin-offs(有用的副产品)for Mexico,China or India.
Technologies still need to be refined for the local conditions but a lot of the strategic research can have global application,so that money can be used very efficiently.Dr.Fischer said.
Yields of rice,wheat ad maize(玉米)have grown impressively in the past 30 years,especially in developing countries.For example,maize production rose from 2 to 8 tonnes per hectare between 1950 and 1995.But technologies driving this growth such as high-yield varieties,fertilizers,and irrigation,were becoming exhausted.If you want to save the land for non-agricultural activities,for forests and wildlife,youre going to have to increase yield.Dr.Fischer said.
36.What is the passage mainly about?
A.Shortage of food supplies.
B.Development of agricultural technologies.
C.Impact of agricultural research.
D.Expectation of population growth.
37.Which of the following statements is true about the worlds agricultural research funding?
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