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大小春作物并重建设吨粮田云南省农业大学（６５０２０１）杨成英，唐福玉，姚宝云嵩明县地处滇东北部，是云南商品粮基地县。１９９１年１０月～１９９２年１０月我们在嵩明县示范５０００亩吨粮田（地）。由于该县“两头低温，中间热量不足，倒春寒，八月低温及夏旱”的...
The size of spring crops and rebuilt tons of grain field Yunnan Agricultural University (650201) Yang Chengying, Tang Fuyu, Yao Baoyun Songming County is located in northeast Yunnan, Yunnan is a commodity grain base counties. From October 1991 to October 1992, we demonstrated 5,000 mu of grain fields (ground) in Songming County. As the county “two low temperatures, the lack of heat in the middle, late spring cold, low temperature in August and summer drought” ...