如何提高氮肥利用率周伯瑜，黄美槐“土把肥料埋，就是划得来”、“氮肥深入土，一亩抵两亩”。这都是说氮肥深施比地表施和浅层施好．据科学测定．碳酸氢铵施在土深３厘米处，氮损失７．４２％，施在土深６厘米处，约损失６％，施在１０－１５厘米处，几乎无损失．据测定... How to improve the utilization rate of nitrogen fertilizer ZhouBoYu, huang meihuai “soil fertilizer buried, is delineated”, “nitrogen deep into the soil, acre arrived two acres.” This is to say that N application is better than surface application and shallow application. According to scientific determination. Ammonium bicarbonate applied at a soil depth of 3 cm, nitrogen loss of 7.42%, applied to the depth of 6 cm, about 6% loss, applied at 10-15 cm, with almost no loss. It is determined ...