| Influence of film mulching on soil temperature and dry matter accumulation of winter wheat |
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| DOI：10.7606/j.issn.1000-7601.2014.04.024 |
| Key Words: winter wheat mulching soil temperature dry matter accumulation |
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| Abstract: |
| The objective of this study was to determine the effects of different film mulching on soil temperature and dry matter accumulation of winter wheat. We planted winter wheat with different plastic film mulching treatments, including film-mulched soil and bunch seeding (C), plastic dropping
in hill (B), drilling beside plastic film (A), and open drill seeding (CK). The results showed that soil temperature effect was mainly manifested in the surface 0～10 cm, the most obvious effect in the depth of 5 cm, weaken with the increase of soil depth, which lasted until grain filling stage of winter wheat. Treatment of C showed significant cooling effect at the jointing stage. Treatment of B lowered the highest surface temperature at grain filling stage. Dry matter accumulation of treatment C was higher than that of treatment B by 18.01%～19.48% during the sampling period. Grain yield performance exhibited an order of film-mulched soil and bunch seeding＞drilling beside plastic film＞plastic dropping in hill and open drill seeding, with the spike number being the crucial factors affecting grain yield. |
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