标题: Yield of Corn, Soybean and Rice in Countries [打印本页] 作者: choi 时间: 3-27-2017 17:21 标题: Yield of Corn, Soybean and Rice in Countries 本帖最后由 choi 于 3-29-2017 17:07 编辑
Note:
(a) Online title: In China, Syngenta Deal Feeds Local GMO Fears
(b) There is no need to read the text. Firstly, I am a biologist, and think the fears are unfounded. In any event, the report is locked behind paywall.
(c) What is interesting to me is the figure, whose legend says the yield (2000- ) is based on United Nations Food and Agriculture Organization (FAO).
For yields of China and US on corn and soybean, click the icon at the bottom of this page.
(d) I go to FAOSTAT. http://www.fao.org/faostat/en/
, where the left upper panel has the heading "Database Updates." The second item (out of three) is "Crops (Production)." There I selected
(a) among "countries": (China, mainland), (China, Taiwan Province of), Japan, and (United States of America)
(b) elements: yield (not area harvested, or production quantity [which is yield times area harvested])
(c) items: "rice, paddy"
(d) Years: 2014 all the way back to 1961
Thus 1 hg (hectogram) = 0.1 kg (kilogram)
(iii) But the above table does not say anything about efficiency. Presumably, USA produces the largest yield in the cheapest way (due to mechanization), and want to export allover the world (including to Taiwan and Japan).
