Effects of Different Film-mulching Modes on Photosynthetic Characters and Yield of Maize

doi:10.11924/j.issn.1000-6850.casb15040179

Abstract

Abstract: In order to explore the suitable film-mulching mode of maize to achieve high and stable yield, the effect of 4 film-mulching modes on leaf area index, photosynthetic rate, transpiration rate, stomatal conductance, leaf WUE and grain yield were investigated under field experimental condition. The results showed that compared with CK, all kinds of film-mulching modes could increase leaf area index, photosynthetic rate, stomatal conductance and leaf WUE and significantly increase transpiration rate after flowering which would lead to high grain yield. Ridging film-mulching mode could achieve the most optimum photosynthetic characters and the highest yield (36.2% higher than that of CK). The grain yield had significantly positive correlation with row number per ear, and had highly and significantly positive correlation with ear length and grain number per row. The correlations of photosynthetic index with grain yield of heading stage, filling stage and mature stage were higher than that of jointing stage and huge bellbottom stage, which showed that higher grain yield could be obtained by improving photosynthesis after flowering. In conclusion, ridging film-mulching mode could increase the photosynthesis and grain yield of maize, which was a suitable film-mulching mode in maize cultivation in Jinzhong area.

CLC Number:

S512.1

Wang Chuangyun,Deng Yan,Zhao Li,Zhang Liguang,Wang Jin,Guo Hongxia and Wang Lujun. Effects of Different Film-mulching Modes on Photosynthetic Characters and Yield of Maize[J]. Chinese Agricultural Science Bulletin, 2015, 31(30): 62-67.

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