干旱地区农业研究2013，Vol.31Issue(2)：59-65,7.
植物根际优良促生菌(PGPR)筛选及其接种剂部分替代化肥对玉米生长影响研究
@@ Screening of plant growth promoting rhizobacteria strains and effects of inoculant on growth of maize by replacing part of chemical fertilizers
摘要
Abstract
Five potential plant growth promoting rhizobacteria (PGPR) strains were screened based on their properties of phosphate dissolving, nitrogenase activity, 3 - indoleacetic acid (IAA) secreting, antagonism of pathogens and growth rate, and the rhizosphere inoculant was produced by mixing these strains. A field experiment was conducted in 2009 and 2020 to investigate the effects of the inoculant on growth of maize by replacing part of chemical fertilizers. The results showed that the quality of the composite microbial inoculant complied with the standard of Microbiological Fertilizer of China (NY227 - 94) . By applying the inoculant to replace 20% ~ 30% of chemical fertilizers, the plant height, above-ground biomass, ear length, ear diameter, ear number per unit area, grain number per ear and economic yield of maize were all raised. In the demonstrative fields in 2010, the inoculant treatment (inoculant + 80% fertilizer) could increase maize yield by 9.86% , reduce cost by 620.1 yuan ·hm-2 , increase income by 2 291.4 yuan ·hm-2 , and increase direct economic benefit by 2 851.5 yuan · hm-2 .关键词
促生菌(PGPR)/接种剂/玉米/植物量/经济产量Key words
plant growth promoting rhizobacteria (PGPR)/ inoculant/ maize/ biomass/ economic yield分类
农业科技引用本文复制引用
荣良燕,姚拓,黄高宝,柴强,刘青海,韩华雯,卢虎..植物根际优良促生菌(PGPR)筛选及其接种剂部分替代化肥对玉米生长影响研究[J].干旱地区农业研究,2013,31(2):59-65,7.基金项目
国家科技支撑计划(2007BAD89B17,2012BAD14B10) （2007BAD89B17,2012BAD14B10）
国家自然基金(30960265) （30960265）
