牲畜粪便浸提液对牧草种子萌发特性的影响

Effects of livestock manure extracts on germination characteristics of forage seeds

摘要:

【目的】探究不同牲畜粪便浸提液对牧草种子萌发特性的影响。【方法】以 4 种牧草种子为试验材料，在 3 种浸提液(鹿粪、牛粪、羊粪)及其不同浓度(0、25%、50%、75%、100%)处理下进行种子萌发试验，并测定种子萌发和幼苗生长的相关指标。【结果】受试的 4 种牧草种子萌发和幼苗生长特性因牲畜粪便浸提液浓度不同而异。3 种浸提液均促进紫花苜蓿(Medicago sativa)种子萌发生长，随着浸提液浓度的增加，促进效果下降；3 种浸提液均抑制胡枝子(Lespedeza bicolor)种子的萌发，低浓度浸提液处理促进其幼苗生长；多年生黑麦草(Poaceae lolium)的发芽势、根长受 3 种浸提液影响升高，垂穗披碱草(Elymus nutans)在鹿粪粪便浸提液影响下，发芽率显著降低，3 种粪便浸提液均抑制供试牧草幼苗生长。【结论】牛粪浸提液促进 4 种牧草种子萌发的效果最佳，羊粪次之，鹿粪最差。

Abstract:

In order to explore the effects of different livestock manure extracts on the germination characteristics of forage seeds.【Method】 four forage seeds were used as test materials， and the three extracts(deer dung，cow dung， sheep dung) and their different concentrations (0，25%，50%，75%，100%) treatments were used for seed germination experiments.【Result】 The results showed that the seed germination and seedling growth of the 4 tested forage grasses varied with the concentration of the livestock manure extract. All three extracts promoted the germina‐ tion and growth of Medicago sativa，and the promotion effect decreased with the increase of extract concentration. All three extracts inhibited the germination of Lespedeza bicolor seeds， and extracting at low concentration liquid treatment promoted the growth of its seedlingsgrowing. The germination potential and root length of Lolium perenne were increased by the three extracts， and the growth of the above‐ground part of its seedlings was reduced compared with the control group. The germination rate of Elymus nutans was significantly reduced under the influence of deer manure extract，and all three extracts inhibited the growth of its seedlings.【Conclusion】 The germination characteris‐ tics of 4 kinds of forage grass affected by livestock manure extract. It is foundshowed that cow manure extract had the best effect on promoting forage germination，followed by sheep manure and deer manure.