乳酸菌复合制剂对燕麦群体结构建成及根系生长的影响

doi:10.12190/j.issn.2096-1197.2023.02.04

摘要/Abstract

摘要： 【目的】探讨乳酸菌复合制剂对燕麦群体结构及根系生长的调控效应。【方法】以燕麦品种坝莜1号为试验材料,设不施乳酸菌复合制剂和化肥（CK）、单施化肥（A）、乳酸菌复合制剂和化肥配施（AB）、单施乳酸菌复合制剂（B）4个处理,研究乳酸菌复合制剂对燕麦群体结构建成、根系生长及产量的影响。【结果】单施乳酸菌复合制剂对燕麦有促生作用,可促进燕麦群体结构建成,且成穗数较CK显著提高了6.15%~9.29%（P<0.05）;可在一定程度上改善燕麦根系形态指标,但与CK相比均未达到显著差异（P>0.05）;促进了燕麦增产,且单穗粒数较CK显著提高了 18.25%~23.14%（P<0.05）。乳酸菌复合制剂和化肥配施条件下,燕麦群体结构建成及根系生长表现最佳,分蘖数和成穗数较CK分别显著提高了16.88%~23.90%和22.13%~27.30%（P<0.05）,成穗数较A显著提高了8.76%~9.16%（P<0.05）;可有效提高燕麦根系形态指标参数,根系平均表面积和根系生物量分别较CK显著提高了49.17%~52.01%和37.02%~44.31%（P<0.05）;促进了燕麦产量及其构成因素的提高,籽粒产量和生物产量较CK分别显著提高了33.20%~33.23%和54.66%~60.39%（P<0.05）,生物产量较A显著提高了19.73%~20.41%（P<0.05）。【结论】施用乳酸菌复合制剂能够促进燕麦群体结构建成和产量提高,改善其根系形态指标,且乳酸菌复合制剂和化肥配施效果更佳。

关键词: 乳酸菌复合制剂, 燕麦, 群体建成, 根系

Abstract: 【Objective】Explore the regulation effect of lactobacillus compound preparation on population structure and root growth of oat.【Methods】Using oat variety Bayou No.1 as the experimental material,four treatments,no lactobacillus compound preparation and chemical fertilizer application（CK）,chemical fertilizer application only（A）,lactobacillus compound preparation and chemical fertilizer combined application（AB）,and lactobacillus compound preparation application only（B） were set up. The effects of lactobacillus compound preparation on oat population structure formation,root growth,and yield were studied.【Results】The application of lactobacillus compound preparation only promoted the growth of oat as well as the population structure formation. The mature spike number was significantly increased by 6.15%-9.29% compared with CK（P<0.05）. The oat root morphological index was improved to certain extent,but the difference was not significant compared with CK（P>0.05）. The yield of oat was improved and the grain number per spike was significantly increased by 18.25%-23.14% compared with CK（P<0.05）. Oat population structure formation and root growth was best under the combined application of lactobacillus compound preparation and chemical fertilizer,with tiller number and mature spike number significantly increased by 16.88%-23.90% and 22.13%-27.30% compared with CK（P<0.05）,and mature spike number significantly increased by 8.76%-9.16% compared with A（P<0.05）. The oat root morphological index parameters were improved effectively with the average root surface area and the root biomass increased significantly by 49.17%-52.01% and 37.02%-44.31% compared with CK（P<0.05）. The combined application promoted the increase of oat yield and its components,with the grain yield and biological yield significantly increased by 33.20%-33.23% and 54.66%-60.39% respectively compared with CK（P<0.05）,and the biological yield significantly increased by 19.73%-20.41% compared with A（P<0.05）.【Conclusion】The application of lactobacillus compound preparation promoted the oat population structure formation,improved yield and the root morphological index,with the combined application of lactobacillus compound preparation and chemical fertilizer been better.

Key words: Lactobacillus compound preparation, Oat, Population formation, Root

中图分类号:

S512.6

孙悦颖, 刘景辉, 米俊珍, 赵宝平, 李英浩. 乳酸菌复合制剂对燕麦群体结构建成及根系生长的影响[J]. 北方农业学报, 2023, 51(2): 33-40.

SUN Yueying, LIU Jinghui, MI Junzhen, ZHAO Baoping, LI Yinghao. The effect of lactobacillus compound preparation on the formation of oat population structure and root growth[J]. Journal of Northern Agriculture, 2023, 51(2): 33-40.

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