Abstract
The object of this study was to analyze the dynamic characteristics of plant stalks morphological parameters and its effect using four maize cultivars(Zhengdan 958,Xianyu 335,Denghai 661,Yinong 103) with 13 treatments of gradually increased density from 1.67 to 16.67 plants m-2 under planting with gradually increased density in field experiments.Final yield and physical plant height,stem diameter at jointing stage,huge bellbottom stage and physiological maturity stage were measured.The results showed that with density increase progressively,the plant height rose at jointing stage and then declined after huge bellbottom stage,the ear height and height ratio of ear to plant climbed up.Lodging easily occurred when height ratio of ear to plant was greater than 0.4.Therefore lodging rate could be decreased if the ear height lowered.Internodes had the trends of elongation below the ear and contraction above the ear,and shortened from top to bottom in the whole stem.The ratio of broadside to narrowside of stem diameter had no significant changes.Plant height,ear height and stem diameter all reflected to densities harmonically.Stem elongation mainly displayed by internodes below the ear,ear height and height ratio of ear to plant had very significant negative correlation with stem in different stages,and the correlation coefficient was above-0.7701.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
