沼肥对玉米种子萌发及幼苗生长的影响

Effect of biogas fertilizers on seed germination and growth of maize

分析了不同沼肥对玉米(Zea mays L.)种子萌发及幼苗生长的影响,其中沼肥分为沼液和沼渣两部分,分别用作浸种液和有机肥。结果表明,50%的沼液浸种(除玉米秸秆沼液)对玉米种子发芽率和发芽势有抑制作用,而玉米秸秆沼液能促进玉米种子发芽,其发芽率、发芽指数、活力指数分别比对照增长了2.69%、5.04%和131.60%;所有沼液处理均能促进玉米幼苗芽和根的生长,酒渣沼液和葡萄藤沼液分别对芽重和根重促进作用最明显。沼渣对玉米种子的发芽率没有促进作用,对玉米幼苗株高(除葡萄藤渣)、生物量有促进作用,其中牛粪沼渣的促进作用最明显,株高和鲜重分别较对照提升14.55%和66.81%。综上所述,沼肥对玉米种子的发芽作用表现为无明显作用或一定程度的抑制作用,但对幼苗生长有明显的促进作用。

This study analyzed the effects of different biogas fertilizers on the germination and seedling growth of maize(Zea may L.),the biogas fertilizers were divided into slurries and residues as seed soaking liquid and organic fertilizer,respectively.The results showed that,50% biogas slurry(except biogas slurry of cornstraw)mainly inhibited the germination rate and germination potential of maize seeds.However,biogas slurry of corn straw promoted seed growth,the germination rate,germination index and vitality index were increased by 2.69%,5.04% and 131.60% respectively compared with the control.Buds and roots’growth of maize seedlings were promoted by all biogas slurry.The weight of buds and weight of root were increased with wine dregs and vines biogas slurry separately.Biogas residue had no significant effect on the germination rate of maize seeds whire could promot the height and biomass of maize seedlings.The promotive effect of cow manure biogas residue was better than others,the height and fresh weight of seedling adding cow manure biogas residue were increased by 14.55% and 66.81% respectively compared with the control.In summary,the effect of biogas fertilizer on seed germination was either insignificant or inhibitory,while it significantly promoted the growth of seedlings.