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有鉴于新中国化学肥料工业兴起的必然性,一九四九年秋,本所与河北、山西、平原、山东、察哈尔,河南等六省二十余个农业试验场,开始合作举行肥料区域试验,兹将本试验之目的、方法、与初步结果,简报如下:本试验之主要目的,是测定不同地区,当地主要棉粮作物,对氮、磷、钾三要素肥料与其连应间
In view of the inevitability of the emergence of the new chemical fertilizer industry in China, in the fall of l994, the institute started cooperation with more than 20 agricultural pilot sites in six provinces including Hebei, Shanxi, Pingyuan, Shandong, Chahar, and Henan to jointly hold the Fertilizer Regional Trial The main purpose of this experiment is to determine the main cotton crops in different regions and localities, and to analyze the relationship between the three elements of nitrogen, phosphorus and potassium and their corresponding fertilizers