亩超吨粮的地力培肥措施博爱县自１９９０年１６万亩玉米亩产首次突破５０９公斤后，１９９３年玉米和小麦亩产分别达到５９２７公斤和４２６公斤，全县连续４年亩产超吨粮，成为我国北方地区第三个吨粮县。１９９６年，小麦亩产又达到５０８７公斤，成为我国第三个５... Mu fertility measures per ton of overweight grain Bo’ai County since 1990 acres of maize per mu for the first time after breaking 509 kilograms, 1993, corn and wheat per mu respectively reached 592.7 kilograms and 426 kilograms, the county for 4 consecutive years of mu produce Super tonnage of grain, becoming the third tonnage county in northern China. In 1996, the output of wheat reached 508.7 kilograms, becoming the third 5 ...