应用灰色关联度法筛选香菇栽培料中柠条屑添加量

Optimization of Caragana korshinskii Sawdust Supplement in a Lentinula edodes Cultivation Substrate Using Grey Correlation Analysis

柠条(Caragana korshinskii)是在干旱荒漠地区可人工栽培的多年生灌木。为了避免病虫害大发生,每隔5~6年需要对其枝条进行修剪。采用柠条屑分别替代香菇(Lentinula edodes)常规配方中10%、20%、30%和40%的栎木屑,进行秋季代料栽培试验,综合考察不同配方条件下香菇主要农艺性状,并采用灰色关联度分析法遴选最佳配方。分析结果显示配方NT2(20%柠条屑、60%栎木屑、18.8%麸皮、1%石膏、0.2%熟石灰)在加权关联度排序中名列第一,表明在该配方中香菇农艺性状综合表现优于对照及其它供试配方,其中出菇时间较对照提前6.3d,子实体蛋白质含量较对照提高6.53%。

Sawdust prepared from Caragana korshinskii, a perennial shrub widely cultivated in arid desert regions, was substituted （10% -40%） for oak sawdust in an established substrate formula used to cultivate Lentinula edodes, and the main agronomic traits and nutritional attributes of the resultant fruit bodies were determined using Grey Correlation Analysis. Highest ranked combined weighting coefficients were recorded with formula NT2, which contained 20% C. korshinskii sawdust, 60% oak sawdust, 18. 8% bran, 1% gypsum powder and 0.2% lime. Fruiting time was 6.3 d earlier and the average protein content of fruit bodies was 6.35% higher using NT2 compared with controls without C. korshinskii sawdust.