Faculty of Agriculture, Shimane University
ISSN:0370-940X
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Bulletin of the Faculty of Agriculture, Shimane University 24
1990-12-21 発行
水稲個体群光合成および呼吸測定値からの太陽エネルギー転換効率算出の試み(その2) : 登熟期の乾物生産量からの転換効率の算出
The Efficiency for Solar Energy Conversion in Rice Population estimated from Crop Photosynthesis and Respiration under Field Conditions(II) : Estimation of the Solar Energy Conversion from Dry Matter Production during the Ripening Stage
Imaki, Tadashi
Takeda, Masashi
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Using four varieties cultured in a normal season or the late planting, theefficiency for Solar energy conversion of a rice population was measured undernatural conditions for 2 to 3 weeks period of the ripening stage.
The absorbed photosynthetic active radiation was obtained from short wavesolar radiation, and gross chemical energy fixed by the population was obtainedfrom adding the net production(dry matter increment) to the estimated dark respiration.
The efficiency for Solar energy conversion thus determined was ranged from 4.1 to 1O.2% based on gross production(Eg) ; 1.2 to 5.7% based on net production(Ea), and found to be higher in the late cool season than the hot July or early August.
The absorbed photosynthetic active radiation was obtained from short wavesolar radiation, and gross chemical energy fixed by the population was obtainedfrom adding the net production(dry matter increment) to the estimated dark respiration.
The efficiency for Solar energy conversion thus determined was ranged from 4.1 to 1O.2% based on gross production(Eg) ; 1.2 to 5.7% based on net production(Ea), and found to be higher in the late cool season than the hot July or early August.
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