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《China Rice》 2016-02
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Characteristics of Photosynthesis and Matter Production of Japonica Rice in Northeast China under High-light-efficiency Cultivation Mode

LI Hongliang;CHAI Yongshan;GAO Chunyan;SUN Yuyou;WEI Caiqiang;XIE Zhong;ZHANG Weiwei;LIU Dan;CHENG Du-juan;ZHAO Yuntong;Mudanjiang Branch of Heilongjiang Academy of Agricultural Sciences;Muling City Agricultural Technology Promotion Center;  
Dongnong 428 and Longdao5 were used as test materials to research the characteristics of photosynthesis and matter production of japonica rice in Northeast China under different cultivation mode. The results showed that, under the appropriate ridge distance, the material production and photosynthetic characteristics of high-light-efficiency cultivation mode such as the dry matter accu-mulation, transportation, leaf area, photosynthetic potential were better than those of other cultivation modes, and the group dry weight and yield at the maturing stage were 1.75 ~2.51 t/hm2 and 2.66 ~3.78 kg/30 m2 higher than conventional cultivation. The group dry matter weight and yield of(20+40)cm×15 cm ridge distance treatment were significantly higher than those of(20+50)cm×15 cm ridge distance treatment under high-light-efficiency cultivation mode, increased by 2.00~2.67 t/hm2 and 2.91~4.95 kg/30 m2 respectively. It suggested that accumulation of group dry matter would decrease when the ridge distance was beyond the suitable range, and not conducive to the final formation of high yield population of rice.
【Fund】: 国家科技成果转化项目(2011GB2B200001);; 国家科技支撑子课题(2011BAD35B02-01-01);; 现代农业产业技术体系建设专项(CARS-01-41)
【CateGory Index】: S511.22
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