生物肥对饲用藜麦产量指标、抗逆性及抗氧化性能的影响

Effects of biological fertilizer on yield indexes,stress resistance and antioxidant properties of quinoa

文章旨在研究生物肥替代常规化肥对饲用藜麦产量指标、抗逆性及抗氧化性能的影响。试验作物品种为中藜1号,生物肥有效活菌数不低于0.2×10^(8)个/g。试验分为6组,处理1为空白组,处理2~6为生物肥组,每组6个重复。其中,空白组添加常规化肥,生物肥2~6组分别由生物肥替代15%、30%、45%、60%、75%的常规化肥。分别在播种后第80、150天对藜麦显序期、成熟期需测定指标进行取样。结果表明,与空白组相比,用生物肥替代60%、75%的常规化肥可显著提升藜麦千粒重、蛋白质含量(P<0.05);与空白组相比,用生物肥替代60%、75%的常规化肥可显著提升藜麦叶片相对含水量、叶绿素含量,显著降低根系脯氨酸、可溶性糖含量(P<0.05);与空白组相比,用生物肥替代60%、75%的常规化肥可极显著提升藜麦籽粒总酚、总黄酮含量、叶片超氧化物歧化酶活性(P<0.01),极显著降低叶片丙二醛含量(P<0.01)。综上所述,用生物肥替代60%的常规化肥可显著提升饲用藜麦产量指标、抗逆性及抗氧化性能。

This study was conducted to explore the effects of biological fertilizer instead of conventional fertilizer on yield index,stress resistance and antioxidant properties of quinoa.The experimental crop variety was Zhongli NO.1,and the number of effective viable bacteria of biological fertilizer was not less than 0.2×10^(8)/g.Six treatments were set up in the experiment.Treatment 1 was used as blank group,completely using conventional chemical fertilizer,and treatment 2~6 was used as biological fertilizer group,with 6 replicates per treatment.In blank group,conventional fertilizer was added,and biological fertilizer groups 2~6 were replaced by 15%,30%,45%,60%and 75%conventional fertilizer,respectively.At the 80th and 150th day after sowing,samples were taken for the indicators needed to be measured in the sequence stage and maturity stage of quinoa.The results showed as follows:compared with blank group,thousand-grain weight and protein content of quinoa were significantly increased by using biological fertilizer instead of 60%and 75%conventional fertilizer(P<0.05).Compared with the blank group,the relative water content and chlorophyll content of quinoa leaves were significantly increased by using biological fertilizer instead of 60%and 75%conventional fertilizer,and the contents of proline and soluble sugar in roots were significantly decreased(P<0.05).Compared with blank group,substituting 60%and 75%conventional fertilizer with biological fertilizer very significantly increased the contents of total phenols and flavonoids in quinoa grains,and the activities of superoxide dismutase in leaves,and very significantly decreased the content of malondialdehyde in leaves(P<0.01).In conclusion,replacing 60%conventional fertilizer with biological fertilizer can significantly improve the yield index,stress resistance and antioxidant properties of quinoa.