肥密互作对大豆产量和品质特性的影响

Effects of Fertilizer Dosage and Planting Density Interaction on Soybean Yield and Quality Characteristics

为研究肥料和种植密度对大豆品质特性和产量的影响,以中龙豆1号为研究对象,设定氮肥施用量0、90、150、210 kg/hm^(2)4个水平和种植密度24万、30万、36万、42万株/hm^(2)4个水平,研究不同氮肥施用量和种植密度对大豆产量和品质特性的影响。结果表明,在氮肥施用量和种植密度增加下,产量先增加后下降。不同氮肥施用量处理的产量由高到低依次为150 kg/hm^(2)处理、90 kg/hm^(2)处理、0处理、210 kg/hm^(2)处理,不同种植密度处理的产量由高到低依次为36万株/hm^(2)处理、42万株/hm^(2)处理、30万株/hm^(2)处理、24万株/hm^(2)处理。在氮肥施用量150 kg/hm^(2)、种植密度36万株/hm^(2)处理下产量最高,达2829.83 kg/hm^(2)。在氮肥施用量增加的情况下,蛋白质和脂肪含量均呈明显的先上升后下降趋势。随着种植密度的增加,蛋白质含量呈明显的先递增后递减的趋势,脂肪含量呈明显的递减趋势。氮肥施用量对蛋白质和脂肪含量无显著影响,而种植密度对蛋白质和脂肪含量有显著影响。

In order to study the effects of fertilizer and planting density on quality characteristics and yield of soybean,Zhonglongdou No.1 was selected as the research object,and nitrogen application rates were set at four levels of 0,90,150,210 kg/hm^(2).Planting density were set at four levels of 24×10^(4),3.0×10^(4),36×10^(4),42×10^(4) plants/hm^(2).The effects of nitrogen application dosage and planting density on yield and quality characteristics of soybean were studied.Results showed that the yield increased first and then decreased with the increase of nitrogen application dosage and planting density.The yield of different nitrogen application treatments was in the order of 150 kg/hm^(2) treatment>90 kg/hm^(2) treatment>0 treatment>210 kg/hm^(2) treatment,and the yield of different planting density treatments was in the order of 36×10^(4) plants/hm^(2) treatment>42×10^(4) plants/hm^(2) treatment>30×10^(4) plants/hm^(2) treatment>24×10^(4) plants/hm^(2) treatment.The highest yield was 2829.83 kg/hm^(2) under the treatment of 150 kg/hm^(2) nitrogen application and 36×10^(4) plants/hm^(2) planting density.With the increase of nitrogen application rate,protein content and fat content increased firstly and then decreased obviously.With the increase of planting density,the protein content increased firstly and then decreased,and the fat content decreased obviously.Nitrogen application had no significant effect on protein content and fat content,but planting density had significant effect on protein content and fat content.