%A DENG Yan, WANG Juan-Ling, WANG Chuang-Yun, ZHAO Li, ZHANG Li-Guang, GUO Hong-Xia, GUO Hong-Xia, QIN Li-Xia, WANG Mei-Xia %T Effects of combined application of bio-bacterial fertilizer and inorganic fertilizer on agronomic characters, yield, and quality in quinoa %0 Journal Article %D 2021 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2021.04171 %P 1383-1390 %V 47 %N 7 %U {https://zwxb.chinacrops.org/CN/abstract/article_7142.shtml} %8 2021-07-12 %X

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 -2 organic fertilizer, 225 kg hm -2 each for urea and diamine phosphate), T2 (2250 kg hm -2 organic fertilizer, 225 kg hm -2 each for urea and diamine phosphate), and T3 (3000 kg hm -2 organic fertilizer, 225 kg hm -2 each for urea and diamine phosphate), conventional fertilization (0 kg hm -2 organic fertilizer, 450 kg hm -2 each 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).