Effect of Characteristics of Photosynthesis and Matter Production of Rice under Two Different Planting Methods with Film Mulching Way of Direct Seeding and Traditional Manual Transplanting

doi:10.7668/hbnxb.2016.04.024

Abstract

Abstract: In order to explore the characteristics of dry matter production and photosynthesis of rice under different planting methods in film mulching way of direct seeding and traditional manual transplanting.Four rice cultivars,two early maturing indica rices,Anyou 136 and Xiangzaoyou 2017,two late maturing indicarices,Jinyou 785 and Ⅱ you 838 were as materials.We compared the dry matter accumulation,distribution,translocation and leaf area,photosynthetic potenti,crop growth rate and net assimilation rate of rice under two different planting methods film mulching way of direct seeding and traditional manual transplanting,traditional manual transplanting were as CK.Results showed that:the main growth period (booting stage,heading stage,waxy stage and maturity stage)under two different planting methods,the dry matter weight per plant,dry matter weight of population,the dry matter accumulation at different stages,dry matter export and transformation,the export rate and transformation rate of leaf,stem and sheath for film mulching way of direct seeding were higher than traditional manual transplanting.The late matuing indica rice of dry matter accumulation and the radio of dry matter accumulation of population were slightly higher than the early maturing varieties in main growth period of rice.The dry matter ratio of leaf and sheath reach its maximum at booting,reached its minimum level at maturity stage,the dry matter ratio of stem reach its maximum at heading,the same as reached its minimum level at waxy stage,but stem's dry matter rised a little again.So those physical signs showed negative,dry matter export and transformation,the export rate and transformation rate of stem.Under two different planting patterns,in the production of photosynthesis,leaf area index,photosynthetic potential,net assimilation rate with film mulching way of direct seeding were higher than traditional manual transplanting.Due to the effect of grain filling rate,the decreasing rate of leaf area for film mulching way of direct seeding are higher than traditional manual transplanting.The results suggested that dry matter and photosynthetic production of rice with different planting methods had their own characteristics.

Key words: Rice, Planting method, Dry matter production, Photosynthetic production

CLC Number:

S511.01

GUO Hui, LI Shuxing, YANG Zhanlie, HE Qiang, GAN Yu, ZHANG Wuhan, XIANG Guanlun, SUN Pingyong, SHU Fu, DENG Huafeng. Effect of Characteristics of Photosynthesis and Matter Production of Rice under Two Different Planting Methods with Film Mulching Way of Direct Seeding and Traditional Manual Transplanting[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(4): 146-152. doi: 10.7668/hbnxb.2016.04.024.

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