5株木霉菌株对鸭茅生长及营养品质的影响  

Effect of five Trichoderma strains on growth and nutritional quality of Orchard grass

作　　者：袁扬 王胤晨 曾兵[2] 张锦华[1] 韩玉竹[2] 

机构地区：[1]贵州省农业科学院畜牧兽医研究所,贵州贵阳550000 [2]西南大学动物科学学院,重庆荣昌402460

出　　处：《草业科学》2018年第2期391-397,共7页Pratacultural Science

基　　金：国家科技支撑计划课题"草田系统病虫害绿色防控技术研究与示范"(2014BAD23B03-3);2015年西南大学青年基金"木霉菌对牧草的促生效应研究"(20700428);贵州省科技厅重大专项"贵州山区牧草产业化生产技术研究集成与应用"(黔科合重大专项字2014年6017号)

摘　　要：在盆栽条件下,分析了5株木霉菌[3株哈茨木霉(Trichoderma harzianum)、1株长梗木霉(T.longibrachiatum)和1株里氏木霉(T.reesei)]对鸭茅(Dactylis glomerata)生长及其营养成分的影响,发现5株木霉菌株对鸭茅植株均有显著的促生长作用。各处理与不接种木霉菌的对照组相比,地上干重、地下干重、分蘖数及叶宽等均有所增加,各指标平均分别增加2.88 g、0.40 g、2.22、0.31 mm;株高及叶长较对照稍有降低,平均分别降低6.31、7.19 cm。从营养成分来看,5株木霉处理均能提高鸭茅植株干物质、粗灰分、粗蛋白、粗脂肪及钙、磷的含量,各指标平均分别增加了8.16%、5.73%、34.48%、33.47%、38.64%、5.95%;有效降低了鸭茅植株的中性洗涤纤维、酸性洗涤纤维的含量,平均分别降低了7.11%、8.04%。5株木霉菌株能明显提高鸭茅的营养品质,其中哈茨木霉1菌株表现最优。In this study,the effects of five Trichoderma strains,3 strains of Trichoderma harzianum(M1,M2,HM),1 strain T. longibrachiatum(LM) and T. reesei(LS),on growth and nutrient levels of Dactylis glomerata were evaluated under potting conditions. The results showed that the 5 Trichoderma strains had marked growth-promoting effects on Orchard grass. Compared with the control,the dry weight of the aboveground and underground parts,tiller number,and leaf width of Orchard grass,whose the mean values were increased 0. 88 g,0. 40 g,2. 22,0. 31 mm,respectively,and the height and leaf length decreased slightly to 6. 31 cm and 7. 19 cm,respectively. Trichoderma infection could increase the dry matter,crude ash,crude protein,crude fat and calcium,and phosphorus contents of the Orchard grasses,whose mean values were 8. 16%,5. 73%,34. 48%,33. 47%,38. 64%,and 5. 95,respectively. All Trichoderma treatments effectively reduced the values of neutral detergent fiber and acid detergent fiber of the Orchard grasses by 7.11% and 8. 04%,respectively. The 5 Trichoderma strains could substantially improve the nutritional quality of Orchard grass. Strain M1 showed the most desired effects. In a later test,M1 was identified as Trichoderma harzianum.

关 键 词：木霉菌 鸭茅 生长指标 营养品质 常规养分 促生 

分 类 号：S816.15[农业科学—饲料科学] S543.3[农业科学—畜牧学]