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为了求得合理施肥的有关数据，更好地促进科学配方拖肥的发展，1978～1995年辛集市和中国农科院土肥所合作，在辛集市马兰村农场进行了一系列肥料长期定位试验。所谓施肥定位试验就是指在固定地块的基础上，固定每年施什么肥，什么时间施，施多少数量的一种测试肥料效应的方法?
In order to obtain the data of reasonable fertilization and promote the development of science formulating the fertilizer better, from 1978 to 1995, Xinji City and Soil and Fertilizer Institute of Chinese Academy of Agricultural Sciences conducted a series of long-term fertilization experiments at Malan village farm in Xinji City. The so-called fertilization positioning test refers to the fixed land on the basis of fixed annual fertilizer, what time Shi, the amount of application of a test fertilizer effect?