过去错误认为，花生是豆科作物，有根瘤菌，有固氮作用，一般很少给花生施氮素化肥。近几年来的生产实践证明：花生底肥重施氮，产量增产近一半。示范试验表明：花生用40公斤碳按作底肥，亩产396公斤，比不施的亩产204公斤增产48．5％，比同等追肥的亩产331．5公斤增产比，28％ Past mistakes that peanuts are leguminous crops, rhizobia, a nitrogen fixation, the general seldom nitrogen fertilizer to peanuts. In recent years, production practice has proved that: peanut base fertilizer nitrogen application, yield increased nearly half. Demonstration tests showed that: peanut with 40 kilograms of carbon as a base fertilizer, per mu 396 kilograms, compared with no application of 204 kilograms of mu yield 48.5%, 331.3 kilograms more than the same top dressing yield, 28%