生物菌肥与无机肥配施对藜麦农艺性状、产量性状及品质的影响

为探索适宜晋北地区推广应用的藜麦栽培管理模式,实现藜麦产量和品质提升,本试验选用当地自有品种华青1号,采用单因素完全随机设计,以有机肥和无机肥配施比例为变量,设常规施肥CK (有机肥0 kg hm^-2,尿素和磷酸二胺各450 kg hm^-2)、有机肥和无机肥配施比例T1 (有机肥1500 kg hm^-2,尿素和磷酸二胺各225 kg hm^-2)、T2 (有机肥2250 kg hm^-2,尿素和磷酸二胺各225 kg hm^-2)、T3 (有机肥3000 kg hm^-2,尿素和磷酸二胺各225 kg hm^-2) 4个处理,分析藜麦生育进程、农艺性状的差异,揭示藜麦产量和品质同步提升的农学性状,探求藜麦高产优质适宜的有机无机配施比例。结果表明,生物菌肥与无机肥配施可增加土壤表层有机质含量,降低碱解氮和有效磷含量及土壤pH,显著增加速效钾含量,且随生物菌肥施用量的增加,土壤中有机质、碱解氮、有效磷和速效钾含量提高,pH降低...

Effects of combined application of bio-bacterial fertilizer and inorganic fertilizer on agronomic characters,yield,and quality in quinoa

To explore the suitable cultivation and management model of quinoa in northern Shanxi province,and therefore improve the yield and quality of quinoa,an experiment was conducted with cultivar Huaqing 1 as plant material.The effects of varied proportion of organic and inorganic fertilizer on the growth process of quinoa,agronomic traits,yield,and quality were studied using single factor completely random design.There were three treatments including T1(1500 kg hm^-2organic fertilizer,225 kg hm^-2each for urea and diamine phosphate),T2(2250 kg hm^-2organic fertilizer,225 kg hm^-2each for urea and diamine phosphate),and T3(3000 kg hm^-2organic fertilizer,225 kg hm^-2each for urea and diamine phosphate),conventional fertilization(0 kg hm^-2organic fertilizer,450 kg hm^-2each for urea and diamine phosphate)was the control.The results showed that the combined biological bacterial fertilizer and inorganic fertilizer could increase the content of organic matter,available nitrogen,phosphorus,and potassium in soil,and decrease the pH of soil.Compared with CK,the combined biological fertilizer could effectively shorten the growth period,and increase plant height,stem diameter and stem strength at mature stage,thus reduce lodging rate.Also,combined biological fertilizer treatment promoted the branches and 1000-grain weight of quinoa,and improved quinoa yield,protein content and fat content,and the above favorite effects were obviously showed in T2 treatment.Starch content was the lowest in T2 treatment,but there was no significant differences among the three treatments.With the increase application of bacterial fertilizer,nitrogen use efficiency,phosphorus fertilizer use efficiency and partial productivity of nitrogen and phosphorus fertilizer was firstly increased and then decreased.Among three groups,the above index was the highest in T2 treatment.Correlation analysis showed that the relationship between the yield and 1000-grain weight was the most correlated,and protein content in grains was positively correlated with yield,1000-grain weight,branch number,and stem strength,but negatively correlated with lodging rate.In conclusion,under the condition of current experiment,the suitable nitrogen application rate for quinoa was the combination of urea(225 kg hm^-2),diamine phosphate(225 kg hm^-2)and inorganic fertilizer(2250 kg hm^-2).