合理施肥中确定边际利润率值的研究

张玉峰;白志明;周乃健

Studies on the Determination of Marginal Profit Rate in Rational Application of Fertilizer

Zhang Yufeng;Bai Zhiming;Zhou Naijian

系统工程理论与实践 . 1997, (10): 50 -53 . DOI: 10.12011/1000-6788(1997)10-50