棘孢曲霉对多年生黑麦草牧草品质和产量的影响

Effects of Aspergillus aculeatus on the quality and yield of perennial ryegrass

多年生黑麦草(Lolium perenne)作为一种优良牧草,在畜牧业中被广泛应用。研究表明,棘孢曲霉(Aspergillus aculeatus)能够提高多年生黑麦草的抗逆性,促进其生长。本实验在田间条件下,研究了棘孢曲霉对多年生黑麦草生长量、产量、干草产量、牧草品质、矿质元素、生长激素以及代谢产物的影响。结果表明:外源添加棘孢曲霉显著提高多年生黑麦草的生长量、产量和干草产量以及叶片中N、P、K、Ca和Mn的含量。此外,接种棘孢曲霉的多年生黑麦草叶片含有较多的粗蛋白和粗脂肪,同时对多年生黑麦草的生长激素和代谢产物有显著影响。这些研究结果为棘孢曲霉在多年生黑麦草上进一步应用提供了科学依据。

Perennial ryegrass(Lolium perenne),a fine forage grass,is widely used in animal husbandry.Previous studies reported that application of fungi Aspergillus aculeatus could improve stress resistance and growth of perennial ryegrass.In this study,we investigated the effects of A.aculeatus application on perennial ryegrass growth,yield,hay yield,forage quality,mineral element content,growth phytohormones and metabolites under field conditions.Exogenous A.aculeatus application significantly increased the biomass,yield,hay yield of perennial ryegrass as well as the contents of N,P,K,Ca and Mn in leaves.Furthermore,leaves of perennial ryegrass treated with A.aculeatus had higher concentrations of crude protein and crude fat.Application of A.aculeatus had significant effects on growth phytohormones as well as metabolites of perennial ryegrass.These results provide a theoretical basis for further application of A.aculeatus on perennial ryegrass.