不同肥料对极早熟高粱龙杂20产量及农艺性状的影响

Effects of Different Fertilizers on Yield and Agronomic Characters of Very Early Maturing Sorghum Longza 20

为了探究黑龙江省高粱生产中氮磷钾肥的配比,以高粱大田生产中常用的肥料磷酸氢二铵+大粒尿素为对照(施纯氮量为180 kg·hm^(-2)),其他处理施纯氮量为150 kg·hm^(-2),研究不同肥料对酿造高粱龙杂20产量及主要农艺性状的影响。结果表明,生物复混肥增产效果最好,其次是长效缓释肥,较常规施肥差异显著。复合肥较常规施肥增产,但差异不显著。目前在高粱生产中应重视磷肥和钾肥的投入,而氮肥与磷钾肥配合施用,纯氮量为150 kg·hm^(-2)时即可满足高粱生产中对氮肥的需求。

In order to explor the ratio of nitrogen,phosphorus,and potassium fertilizers in sorghum production in Heilongjiang Province,this experiment took the fertilizer diammonium hydrogen phosphate+large grain urea,which was commonly used in sorghum field production,and the amount of pure nitrogen applied was 180 kg·ha^(-1)as the control,and the amount of pure nitrogen applied in other treatments was 150 kg·ha^(-1),to study the effect of different fertilizers on the yield and main agronomic characters of brewing sorghum Longza 20.The results showed that the biological compound fertilizer had the best yield increase effect,followed by the long-acting slow-release fertilizer,which was significantly different from the conventional fertilizer.The yield of compound f ertilizer was higher than that of conventional fertilizer,but the difference was not significant.At present,attention should be paid to the input of phosphorus and potassium fertilizer in sorghum production,and the combined application of nitrogen fertilizer and phosphorus and potassium fertilizer could meet the demand for nitrogen fertilizer in sorghum production when the amount of pure nitrogen was 150 kg·ha^(-1).