【摘要】 试验研究了不同硝铵尿素液肥施用量对玉米生长的影响规律,以期为玉米栽培中合理施用硝铵尿素液肥提供理论依据。试验在田间条件下,设置N1(N为0 kg/hm~2,CK),N2(N为100 kg/hm~2),N3(N为150 kg/hm~2),N4(N为200 kg/hm~2)4个处理,小区试验设计,3次重复。结果表明,N3处理的株高分别比N1,N2处理提高44.10%,20.84%,且差异显著;N3处理的叶片长度长于N2处理11.03 cm,差异显著,N2处理长于对照9.56 cm,差异也显著;N3处理的根系、茎鲜质量分别比N2处理提高23.09%,30.14%,且差异显著,N2处理与对照之间也存在显著差异;N4处理株高、叶片长度、根系和茎鲜质量均与N3处理之间无显著差异。综合分析认为,N3处理最优。更多还原

【Abstract】 The effect of different UAN fertilizer application on the growth of maize was studied to provide a theoretical basis for rational application of ammonium nitrate urea liquid fertilizer in maize cultivation.The test set 4 treatment as N1(N 0 kg/hm~2),N2(N100 kg/hm~2),N3(N 150 kg/hm~2),N4(N 200 kg/hm~2)under field conditions,the plot experiment was designed and repeated 3 times.The results showed that the plant height of N3 treatment increased by 44.10% and 20.84%,respectively,compared with N1 and N2 treatment,and the difference was significant.Leaf length of N3 treatment was higher than N2 treatment 11.03 cm and then it had significant difference,N2 treatment was higher than that of control 9.56 cm and then it had significant difference.The fresh quality of root and stem of N3 treatment increased by 23.09% and 30.14%,respectively,compared with N2 treatment and then it had significant difference,at the same time,there was significant differences between N2 and control.There was no significant difference in plant height,leaf length,root and stem quality between N4 and N3.Comprehensive analysis shows that N3 is the best treatment.更多还原