微藻生物肥对稻苗生长的影响  

Effect of Microalgae Biofertilizer on Growth of Rice Seedlings

作　　者：兰彪 贾佳欢 孙广仁[1] LAN Biao;JIA Jiahuan;SUN Guangren(College of Forestry,Beihua University,Jilin 132013,China)

机构地区：[1]北华大学林学院,吉林吉林132013

出　　处：《山西农业科学》2022年第3期391-397,共7页Journal of Shanxi Agricultural Sciences

基　　金：吉林省重点科技研发项目(20180201061NY)。

摘　　要：微藻能够合成丰富的生物活性成分,为作物提供丰富的矿物质营养,促进农作物代谢生长。试验以固氮蓝藻为原料制备微藻生物肥,设置纯水、纯水+培养基、纯水+微藻生物肥、河沙、河沙+培养基、河沙+微藻生物肥、土壤、土壤+培养基、土壤+微藻生物肥共9个处理,通过在纯化水、河沙和土壤的不同基质上进行种植,研究微藻生物肥对稻花香2号水稻幼苗生长的影响。结果表明,在纯化水、河沙和土壤基质上,施用微藻生物肥的处理总叶绿素含量显著高于对照,分别提高12.4%、19.2%和23.3%,可见微藻能够促进稻苗叶绿素合成,且更适宜在水培苗中应用;通过根系分析试验发现,使用微藻生物肥能够显著增加根的表面积和平均直径。在水培育苗中,微藻生物肥比空白组投影面积增加43.28%,根表面积增加51.66%,根平均直径增加16.22%,体积增加50%;微藻生物肥比基质组投影面积增加35.21%,根表面积增加23.08%,根平均直径增加14.29%,体积增加25%。在3种基质中,微藻生物肥组与基质组相比,根平均直径分别增加14.29%、20.59%和19.44%,根表面积分别增加23.08%、25.44%和49.69%。可见,微藻肥可以通过增加稻苗叶绿素、根系表面积及粗度提高水稻营养和水分的吸收。Microalgae synthesizes abundant components with biological activity providing crops with mineral nutrition and facilitating metabolism and growth of crops. In this study, microalgae biofertilizer was prepared from nitrogen-fixing cyanobacteria. Nine treatments including purified water, purified water+culture medium, purified water+microalgae biofertilizer, river sand, river sand+culture medium, river sand+microalgae biofertilizer, soil, soil+culture medium, soil+microalgae biofertilizer were set. The effects of microalgae biofertilizer on growth of rice seedlings of Daohuaxiang 2 were studied by planting materials on different substrates of purified water, river sand and soil. The results showed that the total chlorophyll content of the experimental group applying microalgae biofertilizer was significantly higher than that of the control groups on purified water, river sand and soil substrate, which increased by 12.4%, 19.2% and 23.3% respectively. It could be seen that microalgae promoted chlorophyll synthesis of rice seedlings, and it was more suitable to apply microalgae biofertilizer in hydroponics. Through the root analysis experiment, it was found that using microalgae bio-fertilizer could significantly increase root surface area and average root diameter. In hydroponic seedling raising, compared with the blank groups,the projected area of microalgae biofertilizer increased by 43.28%, the surface area of root increased by 51.66%, the average diameter of root increased by 16.22%, and the volume increased by 50%. Compared with the substrate groups, the projected area of microalgae biofertilizer increased by 35.21%, the root surface area increased by 23.08%, the average root diameter increased by 14.29%and the volume increased by 25%. Among the three substrates, compared with the substrate groups, the average root diameter of microalgae biofertilizer group increased by 14.29%, 20.59% and 19.44%, and the root surface area increased by 23.08%,25.44% and 49.69%, respectively. It could be seen that microalgae fert

关 键 词：微藻生物肥 水稻 叶绿素 根系分析 

分 类 号：S511[农业科学—作物学]