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一种新型农作物增产剂——高效生物微肥已由北京大学研制成功。经在十省一市45万亩大田试验,增产效果显著。1991年2月在兰州通过了省级鉴定,並于1991年4月荣获北京第二届国际博览会生物肥类唯一金奖。
A new crop yield-increasing agent - efficient biological fertilizer has been successfully developed by Peking University. After 450000 acres of field trials in ten provinces and one city, a significant increase in yield. February 1991 in Lanzhou passed the provincial appraisal, and in April 1991 won the second Beijing International Expo bio-fertilizer only gold medal.