微润管布置方式对夏玉米苗期生长的影响

Effect of Moistube Arrangements on the Growth of Maize at Seedling Stage

为了探明微润灌溉对大田夏玉米生长的影响,以夏玉米为研究对象,采用完全随机试验设计,研究不同微润管布置方式对夏玉米苗期生长的影响。研究表明,微润管布置密度对夏玉米苗期生长具有显著的影响,随微润管布置密集程度的增加,株高、茎粗与地上鲜物质质量呈增加趋势,地下鲜物质质量与干物质质量、群体生长率、根系体积均呈先增加后减小趋势。3管2行微润灌为最佳布置方式,该处理的总干物质质量和群体生长率比地下滴灌分别提高了0.44%和2.5%,比无灌溉处理分别提高了41.31%和41.37%。

In order to study the influence of irrigation on the growth of summer maize,the summer maize at seedling stage is adopted as the research subject and the effect of different micro tube arrangements on the growth of summer maize at seedling stage is studied.The results show that the arrangement density of moistube has a significant effect on Maize Seedling Growth;the plant height,stem diameter and quality of fresh material on ground increase with the increase of denseness of micro tube;the fresh quality of underground materials,quality of dry mater,CGR and root volume first increase and then decrease.The optimal arrangement of moistube-irrigation is three tubes with two lines;the total dry biomass and the population growth rate increase about 0.44% and 2.5%,respectively under this irrigation arrangement when compared with the treatment of subsurface drip irrigation,and increased about41.31% and 41.37%,respectively,when compared with the treatment without irrigation.