生物有机液体混合肥对甜高粱根系形态特征的影响  

Effect of Mixed Organic Liquid Fertilizer on Root Morphological Characteristics of Sweet Sorghum

作　　者：徐伟洲[1] 史雷[1] 王小林[1] 刘翠英[1] 刘琼[1] 亢福仁[1] 

机构地区：[1]榆林学院/陕西省陕北矿区生态修复重点实验室,陕西榆林719000

出　　处：《中国农学通报》2017年第16期12-18,共7页Chinese Agricultural Science Bulletin

基　　金：陕西省自然科学基础研究计划项目"黄土丘陵区两乡土草混播下种间作用生育期动态变化研究"(2016JQ4013);陕西省教育厅专项科研计划项目"陕北矿区水土保持草本植物的选择与应用研究"(16JK1894);榆林市产学研合作项目"牧草遗传改良与资源利用实验室"(2014cxy-02-05);榆林学院博士科研启动基金项目"陕北农牧交错区优良牧草抗旱生理生态特征动态变化研究"(16GK04)

摘　　要：为揭示生物液体有机混合肥对陕北农牧交错区青贮饲草作物根系形态特征的影响,通过盆栽控制试验,以甜高粱(Sorghum bicolor L.)为材料,设置不同浓度的生物活性水(BMW)(B1、B2、B3和B4)和Aidoora溶液(A1、A2和A3)处理,并测定甜高粱幼苗期的根系形态特征。结果表明:在大多数单一液体肥和混合液体肥下,甜高粱的根系生物量(RB)、根冠比(RSR)、根系体积(RV)、总根长(TRL)、根系表面积(RSA)、平均根直径(RAD)、比根长(SRL)和比根面积(SRA)均显著高于CK,表明BMW和Aidoora溶液有利于促进甜高粱苗期根系生物量积累和根系吸收能力;甜高粱的RB、TRL和RSA两两间均呈明显的正相关关系,表明根系表面积和总根长均随着根系生物量的升高而增加。综上分析表明,B3A2和B3A3相对于其他BMW和Aidoora混合液体肥,有利于促进甜高粱幼苗根系生物量积累和根系形态建成。To clarify the effect of mixed organic liquid fertilizer on root morphological characteristics of foragecrops in agro-pastoral ecotone of northern Shaanxi, sweet sorghum was used as the material in the potexperiment. Treatments with different concentrations of bacteria mineral water（BMW）（i.e. B1, B2, B3 and B4）and Aidoora solutions（i.e. A1, A2 and A3） were set, and the root morphological characteristics in the seedlingstage of sweet sorghum were determined. The results showed that, under most single liquid fertilizer or mixedliquid fertilizer treatments, the root biomass（RB）, root shoot ratio（RSR）, root volume（RV）, total root length（TRL）, root surface area（RSA）, root average diameter（RAD）, specific root length（SRL） and root area（SRA）was higher than that of CK, which indicated that BMW and Aidoora solutions were favorable to improving theroot biomass accumulation and absorbing capacity of root. Positive linear relationships existed among RB, TRLand RSA, which indicated that the total root length or root surface area increased with root biomass rising.These results suggested that, compared with other BMW and Aidoora solutions, B3A2 and B3A3 were the mostsuitable mixed organic liquid fertilizers to improve the root biomass accumulation and morphology formation inthe seedlings of sweet sorghum.

关 键 词：甜高粱 生物活性水(BMW) Aidoora溶液 根系形态特征 根系生物量 

分 类 号：S312[农业科学—作物栽培与耕作技术]