论文部分内容阅读
[目的]研究不同元素合理配施对苜蓿产量的影响。[方法]试验采用四元二次回归正交旋转组合设计,研究了硫酸钾、氯化铵、过磷酸钙和氧化镁对苜蓿干物质产量的影响。[结果]试验肥料对苜蓿干物质产量的影响顺序为硫酸钾>氯化铵>氧化镁>过磷酸钙。其中,硫酸钾对苜蓿干物质产量有显著影响,硫酸钾和氧化镁互作对产量影响显著。[结论]获得苜蓿干物质产量为19 224.6 kg/hm2以上的优化方案为硫酸钾163.235～181.679 kg/hm2;氯化铵155.877～174.258 kg/hm2;过磷酸钙566.177～632.924 kg/hm2;氧化镁30.060～33.628 kg/hm2。
[Objective] The research aimed to study the effects of different elements on the yield of alfalfa. [Method] The quaternary quadratic regression orthogonal rotation combination design was used to study the effects of potassium sulfate, ammonium chloride, superphosphate and magnesium oxide on dry matter yield of alfalfa. [Result] The order of influence of experimental fertilizer on the dry matter yield of alfalfa was potassium sulfate> ammonium chloride> magnesium oxide> superphosphate. Among them, potassium sulfate had a significant effect on the dry matter yield of alfalfa, and the interaction between potassium sulfate and magnesium oxide had a significant effect on the yield. [Conclusion] The optimized plan of gaining more than 19 224.6 kg / hm2 of dry matter of alfalfa was 163.235-181.679 kg / hm2 of potassium sulfate, 155.877-174.258 kg / hm2 of ammonium chloride, 566.177-632.924 kg / hm2 of superphosphate, 30.060 ~ 33.628 kg / hm2.