| Effect of mulching on soil temperature and crop growth of winter wheat in plain of North China |
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| DOI：10.7606/j.issn.1000-7601.2009.01.21 |
| Key Words: straw mulching plastic film mulching soil temperature crop growth dry matter and N remobilization water use efficiency |
| Author Name | Affiliation | | GAO Lina | Center for Agriculture Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences,Shijiazhuang,Hebei 050021,China；Graduated University of Chinese Academy of Sciences,Beijing 100049,China | | CHEN Suying | Center for Agriculture Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences,Shijiazhuang,Hebei 050021,China | | ZHANG Xiying | Center for Agriculture Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences,Shijiazhuang,Hebei 050021,China | | SUN Hongyong | Center for Agriculture Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences,Shijiazhuang,Hebei 050021,China | | WANG Yanmei | Center for Agriculture Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences,Shijiazhuang,Hebei 050021,China | | SHAO Liwei | Center for Agriculture Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences,Shijiazhuang,Hebei 050021,China；Graduated University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: |
| As one of the measures for agricultural water saving and conservation of soil moisture,mulching has been widely used.But mulching also affects soil temperature that influences crop growth.This research was conducted to illustrate the effects of different mulching materials(straw and plastic film) on the growth and development of winter wheat.Straw mulch(SM) reduced soil temperature in spring that extended the spike differentiation duration,but shortened the duration of grain filling by 2 days.The remobilization efficiency of dry matter and N to grain production was increased under SM.The final yield and water use efficiency(WUE) was reduced by 1.98% and 0.14 kg/m3 compared with that without mulching(CK) respectively.Plastic film mulching(PFM) increased more soil temperature than that of CK.The higher temperature under PFM in spring accelerated spike differentiation that reduced the seed numbers per spike.And the yield and WUE of winter wheat under PFM was 3.24% and 0.17 kg/m3 less than that of the CK,respectively.Though mulching could reduce soil evaporation,its effects on soil temperature might affect negatively winter crop growth and reduce its yield and WUE. |
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