棉花施用高效涂层复合氮肥的效果研究

Effects of Applying Highly Available Compound Nitrogen Fertilizer on Cotton

田间试验结果表明 ,棉花施用高效涂层复合氮肥较施用普通尿素增产皮棉4.98%～ 5.57% ;高效复合氮肥的最适施纯氮量为 1 88.34kg/hm2 ;以其总量的 33%、6 7%分别作发棵肥、花铃肥施用的效果最佳 ;

The results of cotton field experiment indicate that applying highly available compound nitrogen fertilizer can increase the ginned cotton yield by 4.98%～5.57% as compared with applying common urea; the optimum application rate of net nitrogen for highly available compound nitrogen fertilizer is 188.34kg/hm\+2; applying 33% and 67% of the total highly available compound nitrogen fertilizer as stem-developing manure and flower and boll manure respectively has the best effect; hole application is the optimum mode of applying highly available compound nitrogen fertilizer.