中国水稻科学
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  1995, Vol. 9 Issue (4): 205-210     DOI:
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Study on Relationship of Double Layer’s Source-Sink for Rice Super-High Yielding Culture

Zhao Qiangji; Zheng Jianchu; Zhao Jianhong; Liu Huazhou; Yuan Congyi

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Abstract In order to research the relationship of double layer's source-sink for both the photosynthetic production and the mineral nutrient, two types of soil environmental treatments, narrow bed with dense ditchs and level paddy field, and three levels nitrogen application, 0 kg N/ha, 150 kg N/ha, 225 kg N/ha, were designed. The development and distribution of rice root system play a role in forming a connecting link between photosynthetic source-sink and mineral nutrient source-sink. The improvement of soil water environment may promote the development and extending downward of root system, mineralization of soil N, and N absorption of plant simultaneously. The efficiency of absorption of applied N increases with the N absorbing ability of the plant, it is necessary to increase the utilization efficiency of absorbed N for further increasing the yield efficiency of applied N. It is important to improve the population structure of canopy in order to obtain a harmonious development of double layer's sourcesink.
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Articles by authors
Zhao Qiangji
Zheng Jianchu
Zhao Jianhong
Liu Huazhou
Yuan Congyi
Key wordsnitrogen nutrition   super-high yielding culture    source-sink relationship   soil environment   photosynthetic production     
Received: 1900-01-01;
Cite this article:   
Zhao Qiangji,Zheng Jianchu,Zhao Jianhong et al. Study on Relationship of Double Layer’s Source-Sink for Rice Super-High Yielding Culture[J]. , 1995, 9(4): 205-210 .
 
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