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草业学报  2015 

复合微生物接种剂替代部分化肥对豌豆间作玉米的促生效应

DOI: 10.11686/cyxb20150203, PP. 22-30

Keywords: 玉米,豌豆,PGPR,减量化肥,促生效应

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Abstract:

通过测定16株供试菌株的固氮酶活性、溶磷量、分泌生长激素能力以及拮抗病原菌特性,筛选出5株优良促生菌,将其与1株豌豆根瘤菌(ACCC16101)制成复合微生物接种剂,进行田间小区试验,研究复合微生物接种剂替代部分化肥对豌豆间作玉米体系生长状况及产量的影响。结果表明,复合微生物接种剂在210d的储存期内有效活菌数均大于3.0×109cfu/mL,符合《微生物肥料》标准(NY227-94)。与使用100%化肥相比,制成的复合微生物接种剂替代20%化肥后,豌豆成熟期的根长增加3.18cm(P<0.05),豌豆盛花期和成熟期的根系干重分别增加0.88和2.39g(P<0.05),豌豆单株结荚数、单荚粒数、单株粒重、籽粒产量分别增加1.2个、0.5个、0.63g、0.64t/hm2(P<0.05);玉米开花期株高增长8.91cm(P<0.05),玉米穗重、籽粒产量分别提高4.33t/hm2、1.87t/hm2(P<0.05)。复合微生物接种剂替代20%化肥使豌豆、玉米分别增收972.00元/hm2、3835.05元/hm2。

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