不同氮肥组合和施肥方式对谷子生长和产量的影响

Effects of Nitrogen Fertilizer Combination and Fertilization Mode on Growth and Yield of Foxtail Millet[Setaria italica(L.)Beauv.]

为了摸索谷子高产施肥中氮肥的最佳组合和施肥方式,以谷子品种豫谷17号为研究对象,研究不同氮肥组合和施肥方式对谷子生长和产量的影响。在施氮总量不变的前提下,共设置7个处理:(1)氮肥为尿素,只作基肥;(2)氮肥为尿素,同时作基肥和追肥;(3)氮肥为碳酸氢铵,只作基肥;(4)氮肥为缓释硫酸铵,只作基肥;(5)氮肥为缓释硫酸铵和尿素,只作基肥;(6)氮肥为碳酸氢铵和缓释硫酸铵,只作基肥;(7)氮肥为碳酸氢铵和尿素,碳酸氢铵作基肥,尿素作追肥。结果表明,处理6谷子的叶面积、穗粗、单穗质量和产量最大,其中叶面积比处理1、2、3、4、5、7分别增加6.60%、1.77%、9.41%、1.07%、3.72%、3.41%,穗粗分别增加4.41%、2.23%、7.21%、2.33%、8.51%、0.65%,单穗质量分别增加6.99%、20.25%、26.36%、12.75%、20.31%、3.38%,产量分别增加9.58%、13.93%、21.57%、21.77%、23.08%、0.99%。

In order to find out the optimum combination of different nitrogen fertilizers and fertilization mode in high-yield fertilization of foxtail millet,the foxtail millet variety Yugu 1 7 was used to study the effects of different combinations of nitrogen fertilizers and fertilization modes on the growth and yield of foxtail millet.On the premise of total N amount fixed,seven treatments were set：（1 ） urea was used as base fertilizer only;（2 ） urea was used as base fertilizer and topdressing fertilizer;（3）ammonium bicarbonate was used as base fertilizer only;（4）slow release ammonium sulfate was used as base fertilizer only;（5 ）slow release ammonium sulfate and urea were used as base fertilizer only;（6 ）slow release ammonium sulfate and ammonium bicarbonate were used as base fertilizer only;（7）ammonium bicarbonate was used as base fertilizer and urea as topdressing fertilizer.The results showed that treatment 6 had the highest leaf area, ear diameter,single panicle weight and yield of foxtail millet,for treatment 6 leaf area was 6.60%,nbsp;1.7 7%,9.4 1%,1.0 7%,3.7 2% and 3.4 1% higher,ear diameter was 4.4 1%,2.2 3%,7.2 1%, 2.33%,8.51% and 0.65% higher,single panicle weight was 6.99%,20.25%,26.36%,12.75%, 20.31% and 3.38% higher,and yield was 9.58%,13.93%,21.57%,21.77%,23.08% and 0.99% higher than that of treatment 1,2,3,4,5,7,respectively.