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【农业科普】中国人为啥不拿玉米当主食?

2026-03-28 16:20:38

【农业科普】中国人为啥不拿玉米当主食?

[图片]玉米和小麦、水稻并称“世界三大粮食作物”可咱们平时几乎不拿玉米当主食这到底是为啥呢？先别急着下定论。“其实，在世界上的很多地方，玉米不仅当饭吃，而且是顿顿都离不开的主食。”农业农村部玉米专家指导组组长、北京市农林科学院玉米首席科学家赵久然指出。比如非洲的许多国家，拉丁美洲...

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CONNECT:[ UseTime:0.001087s ] mysql:host=127.0.0.1;port=3306;dbname=h_mffb;charset=utf8mb4
SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001640s ]
SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000741s ]
SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000648s ]
SHOW FULL COLUMNS FROM `set` [ RunTime:0.001404s ]
SELECT * FROM `set` [ RunTime:0.000516s ]
SHOW FULL COLUMNS FROM `article` [ RunTime:0.001459s ]
SELECT * FROM `article` WHERE `id` = 481317 LIMIT 1 [ RunTime:0.000989s ]
UPDATE `article` SET `lasttime` = 1775791368 WHERE `id` = 481317 [ RunTime:0.007608s ]
SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000715s ]
SELECT * FROM `article` WHERE `id` < 481317 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001097s ]
SELECT * FROM `article` WHERE `id` > 481317 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001358s ]
SELECT * FROM `article` WHERE `id` < 481317 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005585s ]
SELECT * FROM `article` WHERE `id` < 481317 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.008722s ]
SELECT * FROM `article` WHERE `id` < 481317 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002927s ]

0.198559s

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