The Canopy Characters and Efficiency for Solar Energy Utilization of Supper High-yielding Peanut

doi:10.3321/j.issn:1000-7091.2004.02.011

Abstract

Abstract: A comparative study on canopy characters and efficiency for solar energy utilization in peanut at the yields of 8.5 t/ha and 6.0 t/ha was carried out. Results are:A longer duration of maximum leaf area index (LAI) was a marked character in supper high-yielding peanut (SHYP). The leaf area duration (LAD) of SHYP reached 400.1 m2·d/m2, significantly higher than that of HYP. The LAD in yield-forming stage was very important to peanut yield, taking more than 80% over whole growing season. The efficiency of LIR per unit leaf area in SHYP was lower than that in HYP. The dry matter production rate (DMPR) was constantly higher in SHYP compared with that in HYP during whole growing season, especially during late growing season. There was a clear character for SHYP. It was estimated that there existed a high potential in ESEU for peanut production, and the optimum conditions and measures for further increase of peanut yield should be studied in future.

Key words: Peanut, Super high yield, Light interception-rate, Efficiency for solar energy utilization

CLC Number:

S565.201

WANG Cai-bin, ZHENG Ya-ping, CHENG Bo, SHA Ji-feng JIANG Zhen-xiang. The Canopy Characters and Efficiency for Solar Energy Utilization of Supper High-yielding Peanut[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2004, 19(2): 40-43. doi: 10.3321/j.issn:1000-7091.2004.02.011.

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