我们对普通玉米去下位雌穗幼穗对上位果穗产量性状的影响做了研究。结果表明,不仅不会影响上位果穗的正常发育,而且还会产生一定的增产效果。1 材料和方法1.1 品种5003/E28沈阳市种子公司提供;7945/5003铁岭市农科所提供。1.2 主要栽培措施垄作。行距60厘米,株距35.8厘米(每亩3103株)。每亩施种肥硫酸铵11.3公斤,三料磷肥11.9公斤。大喇叭口期每亩追施尿素12公斤,5月6日播种,9月15日收获。1.3 处理 We studied the effect of common corn on the yield traits of the upper ear of the young ear. The results showed that not only did not affect the normal development of the upper ear, but also produce some yield. 1 Materials and methods 1.1 Varieties 5003 / E28 Shenyang seed companies to provide; 7945/5003 Tieling City Agricultural Science provided. 1.2 The main cultivation measures ridge. Row spacing 60 cm, spacing 35.8 cm (3103 plants per acre). Fertilizer per acre fertilizer ammonium sulfate 11.3 kilograms, three fertilizer 11.9 kilograms. Large bell mouth per acre topdressing urea 12 kg, May 6 sowing, September 15 harvest. 1.3 processing