烟秆生物炭对直播稻生长的影响  

Effect of Tobacco Stalk Biochar on Growth of Direct Seeding Rice

作　　者：刘丹 娄惠婕 冯章丽 付辉灿 陈艳 吴亚男[1] 邓力喜[1] 颜雄 隋常玲[1] LIU Dan;LOU Huijie;FENG Zhangli;FU Huican;CHEN Yan;WU Ya’nan;DENG Lixi;YAN Xiong;SUI Changling(College of Biology and Agriculture,Zunyi Nomal University,Zunyi Guizhou 563006,China;Technology Development Service Centre in Meitan,Zunyi Guizhou 564110,China;College of Resources and Environment,Zunyi Nomal University,Zunyi Guizhou 563006,China)

机构地区：[1]遵义师范学院生物与农业科技学院,贵州遵义563006 [2]湄潭县科技发展服务中心,贵州湄潭564110 [3]遵义师范学院资源与环境学院,贵州遵义563006

出　　处：《耕作与栽培》2023年第2期40-43,53,共5页Tillage and Cultivation

基　　金：遵义师范学院博士基金(遵师BS[2019]45号);遵义市科技局、遵义师范学院联合科技研发项目(遵市科合HZ字[2020]11号);遵义市科技局、遵义师范学院联合科技研发项目(遵市科合HZ字[2020]18号);遵义师范学院“2021年学术新苗培养及创新探索项目”培育项目(遵师XM[2021]1号-8);赤水河流域动物资源保护与应用研究特色重点实验室2021年度开放课题(黔教合KY字[2013]111-09号);贵州省高等学校黔北现代山地高效农业科技成果转移转化服务乡村振兴示范基地(黔教技[2022]067号)。

摘　　要：为明确生物炭在直播稻生产中的应用价值,以优质籼稻农香42为材料,采用盆栽方式,研究了烟秆生物炭对不同播种密度直播稻生长的影响。结果表明,不同浓度的烟秆生物炭对不同播种密度直播稻生长影响存在差异。相同烟秆生物炭浓度下,随着播种密度的增加,分蘖数呈减少趋势,且低浓度烟秆生物炭(C 5)的分蘖数减少幅度大于高浓度烟秆生物炭(C 10)。烟秆生物炭对不同时期直播稻叶片SPAD影响不同,与C 0相比,烟秆生物炭处理后农香42分蘖期的叶片叶绿色SPAD降低;在同一烟秆生物炭浓度下,不同播种密度农香42叶片SPAD值变化趋势一致,其中齐穗期高浓度烟秆生物炭(C 10)处理能够增加叶片SPAD值。农艺性状数据表明,除结实率和千粒重2个性状外,同一烟秆生物炭浓度下,穗长、一次枝梗数、二次枝梗数、穗粒数以及实粒数等5个性状均表现为播种密度M 1>M 2>M 3。此外,C 20浓度烟秆生物炭抑制直播稻农香42的生长。烟秆生物炭施入浓度为C 5,播种密度为M 1时对直播稻的生长较好。In order to clarify the application value of biochar in the production of direct-seeded rice,a high quality indica rice Nongxiang 42 was used to analyze the effects of tobacco stem biochar on the growth of direct seeding rice with different planting densities using pot experiment.The result showed that there were different effects on the growth of direct seeding rice with different sowing densities by different concentrations of tobacco stalk biochar.Under the same concentration of tobacco stem biochar,with the increase of planting density,tiller number showed a decreasing trend,and the low concentration of tobacco stem biochar treatment(C 5)was greater than the high concentration of tobacco stem biochar treatment(C 10).The effects of tobacco stem biochar on SPAD of direct seeding rice leaves at different stages were different.Compared with the C 0,the leaf SPAD of tobacco stem biochar treatment were decreased for Nongxiang 42 at tillering stage.Under the same tobacco stem biochar concentration,the SPAD value of Nongxiang 42 had the same change trend under different sowing densities,and the high concentration treatment of tobacco stem biochar(C 10)at full heading stage could increase the leaf SPAD value.The agronomic data showed that the 5 traits such as panicle length,number of primary branches,number of secondary branches,number of grains per panicle and number of filled grains were M 1>M 2>M 3 under the same tobacco stem biochar treatment except for seed setting rate and 1000 grain weight.In addition,the results also showed that C 20 tobacco stem biochar concentration seriously inhibited the growth of Nongxiang 42.It was suggested that the application amount of tobacco stalk biochar was C 5 and the sowing density was M 1,which was better for the growth of direct seeding rice.

关 键 词：直播稻 烟秆生物炭 生长 农艺性状 

分 类 号：S511[农业科学—作物学]