不同肥料配施对苦荞倒伏率·产量及产量构成因素的影响

目的]研究复合肥和磷钾肥配施对苦荞倒伏、产量及产量构成因素的影响,为苦荞的高产高效种植提供理论依据。方法]以苦荞K20904为材料,采用完全随机区组试验设计,探讨不同肥料配施对苦荞倒伏率和产量的影响。结果]不同肥料配施对苦荞倒伏率和产量均有极显著影响,倒伏率随施肥量的增加表现为先降低后升高的趋势,产量随施肥量的增加表现为先增加后降低的趋势。结论]复合肥、过磷酸钙和硫酸钾的用量分别为450.0、271.3、66.2 kg/hm~2时,倒伏率最低,产量最高。

Effects of Different Fertilizer Application on the Lodging Rate,Yield and Yield-contributing Fators of Tatary Buckwheat

Objective]To study effects of compound fertilizer and phosphate potassium fertilizer applicationon on the lodging rate,yield and yield-contributing fators of tatary buckwheat,and provide theoretical basis for high yield and efficient planting of tartary buckwheat.Method]U-sing a randomized block experiment,effects of compound fertilizer and phosphate potassium fertilizer applicationon on the lodging rate,yield and yield-contributing fators of tatary buckwheat with tatary buckwheat K20904 as material.Result] Different fertilizers had a very significant effect on the lodging rate and yield of tartary buckwheat.The lodging rate decreased first and then increased with the increase of fertilization,and the yield increased and then decreased with the increase of fertilization.Conclusion] The dosage of compound fertilizer,superphosphate and potassi-um sulfate were 450.0,271.3,66.2 kg/hm2with the lowest lodging rate,the highest yield.