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当前位置: 首页 > 文章 > 岷山红三叶根际优良促生菌对其宿主生长和品质的影响 草业学报 2014,23 (5) 231-240
Position: Home > Articles > The inoculant potential of plant growth promoting rhizobacteria strains to improve the yield and quality of Trifolium pratense cv.Minshan Acta Prataculturae Sinica 2014,23 (5) 231-240

岷山红三叶根际优良促生菌对其宿主生长和品质的影响

作  者：
荣良燕;姚拓;马文彬;李德明;李儒仁;张洁;陆飒
单  位：
甘肃农业大学草业学院;甘肃农业大学食品科学与工程学院;甘肃省草原技术推广总站
关键词：
岷山红三叶;促生菌(PGPR);化肥;营养品质;异黄酮
摘  要：
从岷山红三叶根际分离出高效溶磷菌,并对其分泌生长激素、拮抗病原菌特性进行测定,筛选出优良促生菌6株,根瘤菌1株,按照一定比例混合制成复合菌肥,进行盆栽试验,研究复合菌肥对岷山红三叶产量、品质及异黄酮含量的影响。结果表明:利用筛选的优良促生菌和根瘤菌研制的复合微生物菌肥符合《微生物肥料》标准(NY227-94)。75%化肥+PGPR菌肥处理使岷山红三叶干草总产量较CK增加4.76%,同时,该处理可提高红三叶粗蛋白、粗灰分、钙、磷含量,降低中、酸性洗涤纤维含量;50%化肥+PGPR菌肥处理对岷山红三叶的总干草产量、营养品质以及4种异黄酮的含量均没有显著影响。
译  名：
The inoculant potential of plant growth promoting rhizobacteria strains to improve the yield and quality of Trifolium pratense cv.Minshan
作  者：
RONG Liang-yan;YAO Tuo;MA Wen-bin;LI De-ming;LI Ru-ren;ZHANG Jie;LU Sa;Pratacultural College,Gansu Agricultural University;Key Laboratory of Grassland Ecosystem,Ministry of Education;Station of Grassland Technology Extension;Department of Food Science and Engineering,Gansu Agricultural University;
关键词：
Trifolium pratense cv.Minshan;;plant growth promoting rhizobacteria(PGPR);;chemical fertilizer;;nutritional quality;;isoflavone
摘  要：
Interest in plant growth promoting rhizobacteria(PGPR)has increased due to their potential contribution to sustainable agricultural systems by reducing environmental impact,the consumption of non-renewable resources and input costs.This paper investigates the inoculant effect of PGPR on the hay yield and nutrient quality of Trifolium pratense cv.Minshan.Six PGPR and one rhizobia strains were identified by screening for phosphate solubilization,3-indoleacetic acid(IAA)secretion and antagonism to plant pathogens.A PGPR inoculant was produced by mixing these strains and pot tests have been conducted to investigate its effects on the growth and quality of T.pratense cv.Minshan when combined with different amounts of chemical fertilizer.The results showed that the nitrogenase activity of the rhizobia strain was 488.2C2H4nmol/(mL·h).The phosphate solubilization and IAA secreting ability of the five PGPR strains was distributed across the ranges50.34-229.5mg/L and 0.86-12.01μg/mL respectively.The PGPR compound bio-fertilizer demonstrated strong antagonism to the pathogens Fusarium oxysporiumf.sp.cucumerinum,Rhizoctonia solani and Fusarium oxysporumf.niveum.The composite microbial inoculant complies with the quality standard for microbiological fertilizer in China(NY227-94).Applying the inoculant in combination with 75%of the control's chemical fertilizers increased total hay yield by 4.76%.Nutrient quality also improved.The amount of crude protein,crude ash,calcium and phosphorus increased while the amount of neutral detergent fiber and acid detergent fiber declined.Applying the inoculant in combination with 50% of the control's chemical fertilizers did not increase total hay yield,quality,or the isoflavone content of clover.The experiment has thus shown how the PGPR compound bio-fertilizer can be combined with chemical fertilizers to increase not only the yield and quality of T.pratense cv.Minshan but also the sustainability of agricultural systems.

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