Effects of TRansplanting Density and NitRogen FeRtilizeR Rate on Canopy ChaRacteRistics and Yield of Luliangyou 996

doi:10.3969/j.issn.1000-7091.2013.01.038

Abstract

Abstract: The effect of diffeRent nitRogen feRtilizeR Rates( N 0， 90， 135， 180 kg /ha) and tRansplanting densities ( 2． 2 × 105，3 ． 0 × 105，4 ． 5 × 105 hills /ha) on canopy physiological and ecological chaRacteRistics and yield of eaRly Rice was studied by using supeR hybRid Rice Luliangyou 996． The Results showed that medium tRansplanting densities and medium N use Rate had a significant Reduction of Rice canopy tempeRatuRe in hot season and canopy Relative humidity incReased，good micRo climatic conditions was cReated，theRe by significantly enhanced photosynthetic Rate and SPAD value and solaR Radiation inteRception Rate of canopy，the N135D30 could get the maximum yield， it was 10 489． 30 kg /ha． NitRogen feRtilizeR Rate and tRansplanting density had little effect on gRain numbeR peR panicle， seed-setting Rate but the pRoductive panicles and 1000-gRain weight weRe decReased． The effect of inteRaction of nitRogen feRtilizeR and tRansplanting density on gRain numbeR peR panicle was significant． As a Result，high yield of the eaRly Rice can be obtained by the N feRtilization Rate was used as 141． 2 kg /ha with the tRansplanting density of 3. 66 × 105 hills /ha．

Key words: NitRogen feRtilizeR, Density, MicRo climatic conditions, Physiological and ecological chaRacteRistics

CLC Number:

S143．1

LIU Wen-xiang, QING Xian-guo, AI Zhi-yong, ZHU Jia-wen. Effects of TRansplanting Density and NitRogen FeRtilizeR Rate on Canopy ChaRacteRistics and Yield of Luliangyou 996[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(1): 213-220. doi: 10.3969/j.issn.1000-7091.2013.01.038.

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