不同施氮水平和密度对大麦垦啤2号的影响

[目的]为垦啤2号的高产栽培提供科学依据。[方法]于2006、2007年设计6个施氮水平和5个种植密度,研究施氮量和种植密度对垦啤2号产量和蛋白质含量的影响。[结果]随着施氮量的增加,垦啤2号的株高、千粒重和产量均增加,蛋白质含量先升高后降低。各施氮处理产量差异达0.01显著水平,施氮量为67.5 kg/hm2时产量最高,蛋白质含量也最高。当种植密度为350万株/hm2时,垦啤2号的千粒重最大。随着种植密度的增加,有效穗数、小区产量增加,当种植密度为425万株/hm2时,产量最高。[结论]垦啤2号在黑龙江垦区的最适种植密度为425万株/hm2,最佳施氮量为67.5 kg/hm2。

Effect of Applied Nitrogen Level and Planting Density on the Yield and Protein Content of Barley Kenpi 2

[Objective] The study aimed to provide scientific base for high yield of barley Kenpi 2.[Method] In field test of 2006 and 2007,6 applying N levels and 5 plant densities were signed to study the effect of N application rate and plant density on the yield and protein content of barley Kenpi 2.[Result] With the increment of N application rate,plant height,1000-grain weight and yield of Kenpi 2 were all be increased,its protein content showed the trend of first increase and than decrease.The yield difference in different N application treatments was at 0.01 levels.When N application rate was 67.5 kg/hm2,Kenpi 2 got highest yield and protein.When the plant density was 350×104 plants/hm2,Kenpi 2 got most 1000-grain weight.With the increment of plant density,the effective spikes and yield per plot were increased.When the plant density was 425×104 plants/hm2,the yield of Kenpi 2 was highest.[Conclusion] The optimum plant density and N application rate for Kenpi 2 in Heihongjiang reclamation area were 425×104 plants/hm2 and 67.5 kg/hm2,resp.