TITLE:
Effect of Cultivation Pattern on the Light Radiation of Group Canopy and Yield of Spring Soybean (Glycine Max L. Merrill)
AUTHORS:
Jialei Xiao, uijiang Wang, Ming Zhao, Jing Yin, Wei Li, Yingdong Bi, Wan Li, Yongcai Lai, Xiatian Shu, Yang Zhao
KEYWORDS:
Cultivation Methods; Light Enrichment; Soybean Canopy; Yield Components; Population Canopy
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.4 No.6,
June
11,
2013
ABSTRACT: Heilongjiang
Province is the main soybean-producing area in china. In this study, we
analyzed the canopy structure, dynamic characteristics of light radiation and
yield of Hefeng50 (the main variety of soybean in Heilongjiang Province) under six
different cultivation patterns (ORP, TPCR, ORCP, BRHD, SRHD and FPHD). The
results showed that SRHD and BRHD at different growth period (blossom period R1,
podding R3 and grain filing period R5) produced an even distribution of the
population leaf area, suitable mean foliage inclination angle (MFIA), low transparency
coefficients for defuse penetration (TCDP) and transparency coefficients for
radiation penetration (TCRP), high leaf area index (LAI), extinction light
coefficient (K value), fraction of radiation intercepted (FRI) and light energy
utilization rate. Grain number, dry matter weight per plant, and yield of SRHD
and BRHD were significantly higher than those of other cultivation patterns.
The yield of SRHD, BRHD, ORCP, FPHD and TPCR was increased by 136%, 112%, 79%,
50.1% and 14.7%, respectively, compared to that of ORP. These results suggest
that SRHD and BRHD are the optimal cultivation pattern for the improvement of
soybean yield in phaeozem region of northeastern China.