Effects of Planting Density on Canopy S tructure and Yield of BN Aikang 58 at Later Growing Stage
FENG Su-wei
HU Tie-zhu
LI Xiao-jun
DING Wei-hua
LI Xiao-hui
RU Zhen-gang
Abstract：In order to study the canopy structure and its dynamic characteristics of high-yielding w heat variety ,the chlorophyll content ,leaf area per plant and transmission rate of BN Aikang 58 were measured .The results showed that the planting density had no effects on grain yield and its components at 135 × 104 -270 × 104/ha basic seedlings because BN Aikang 58 had big flexibility of seeding quantity and good self-regulation of population .The dynamic change of chlorophyll content ,leaf area per plant and canopy transmittance showed some regularity ,the turning point being at 20 d after flowering .At this time ,the chlorophyll content of upper leaves reached the maximum value ,the transmittance increased gradually in mid-lower part ,while the green leaves went away and the transmittance at upper part declined gradually .The upper part of canopy main-tained longer green leaf duration ,so it was the photosynthetic body and provided material basis for grain filling at later growing stage .
Keywords：BN Aikang 58planting densitycanopy structureyield traits
Publication Date：2013-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 25-28 )