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合理施肥是烟叶优质适产的重要措施之一,为摸索当地气候条件下,烟叶优质适产的最佳用量及施肥比例,1989年在沛县孟庄乡进行了氮磷钾配比试验.一、试验材料与方法1. 试验设计
Reasonable fertilization is one of the important measures of good quality tobacco. In order to find out the optimum dosage and fertilization proportion of tobacco in good quality and suitable for local climatic conditions, the NPK ratio test was conducted in Mengzhuang, Peixian County in 1989. One Materials and Methods 1. Experimental Design