不同肥料对极早熟高粱生长发育及产量的影响

Effects of Different Fertilizers on the Growth and Yield of Very Early Maturing Sorghum

为了促进黑龙江省极早熟地区高粱生产提质增效,以常规磷酸氢二铵+大粒尿素、施肥量为纯氮180 kg·hm^(-2)作为对照,其他处理施肥量均为纯氮150 kg·hm^(-2),通过田间比较试验,研究不同肥料对高粱生长发育及产量的影响。结果表明,生物复混肥增产效果最好,其次是长效缓释肥和复合肥,与常规施肥差异显著。常规减氮施肥较常规施肥增产5.41%,但差异不显著。目前生产中氮肥用量偏多,纯氮用量在150 kg·hm^(-2)即可满足生产需求。

In order to improve the quality and efficiency of sorghum production in extremely early maturing areas of Heilongjiang Province.In the experiment,conventional diammonium phosphate+large grain urea,180 kg·ha^(-1)of pure nitrogen as the control,and 150 kg·ha^(-1)of pure nitrogen as the fertilization amount in other treatments were used as the control.Through the field comparison experiment,the effects of different fertilizers on the growth and yield of sorghum were studied.The results showed that the effect of biological compound fertilizer was the best,followed by long-term slow release fertilizer and compound fertilizer,which were significantly different from conventional fertilization.Compared with conventional fertilization,conventional nitrogen reduction fertilization also increased the sorghum yield by 5.41%,with no significant difference.At present,the amount of nitrogen fertilizer used in production is too much,and the amount of nitrogen fertilizer used per hectare is 150 kg·ha^(-1),which can meet the production demand.