据国内外资料报道和本文作者的初步临床试验结果证明,由巴西联邦国立Esal 大学西蒙教授引进的白甘薯西蒙1号有较高的实用价值,对治疗糖尿病、出血、贫血和白血病具有一定的效果。但引入国内试种后产量甚微或者有时不能获得薯块,对深入研究其应用效果有直接影响。因此,首先研究西蒙1号生长发育与外界环境的关系,提高产量有重要的意义。为了摸清它在生长发育过程中对三要素的需求情况,于1986～1987年分别进行了田间试验和盆栽试验。研究N、P、K 的不同配比对西蒙1号产量形成的影响,并 According to the domestic and foreign information reports and the author’s preliminary clinical trial results, it is proved that the white sweet potato Simon 1, introduced by Professor Simon of the National University of Esbal, Brazil, has higher practical value and has some effects on the treatment of diabetes, hemorrhage, anemia and leukemia . However, after the introduction of domestic test, the output is very small or sometimes can not get the potato block, which has a direct impact on the in-depth study of its application effect. Therefore, it is important to study the relationship between the growth and development of Simon No.1 and the external environment at first, and to increase the yield. In order to find out its demand for the three factors in the process of growth and development, field experiments and pot experiments were conducted from 1986 to 1987 respectively. The effects of different ratios of N, P and K on the yield formation of Simon No.1 were studied