| Soil temperature variation in the dual－purpose corn field under different plastic film mulching modes |
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| DOI：10.7606/j.issn.1000-7601.2009.05.13 |
| Key Words: film mulching maize filed soil temperature |
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| Abstract: |
| Forage corn,Fushi 0601,was cultivated to investigate soil layer temperature effects respectively under five different film mulching modes which were autumn double ridges whole mulching(A),early spring double ridges whole mulching(E),whole mulching before sowing(W),half flat mulching(H),and non-film mulching(N) at Caoxian Village,Ruoli Township,Jingyuan County of Gansu Province with 240 mm annual rainfall.The trial was targeted for measurement of surface,5 cm,10 cm,15 cm,and 20 cm soil layer temperatures and for the research on soil temperature effects by whole plastic-film mulching on double ridges and planting in catchment furrows of dry-land corn.The results indicated that there existed A>E>W>H>N at each different growing stage for various soil layer temperatures and effective accumulated temperatures(EAT).EAT by different film mulching modes could satisfy normally needed growing accumulated temperature except by N in that it led to hard maturity and low yield with 130.95 kg/667m2 instead of 567.273 kg/667m2 by A showing significant yield increasing effect. |
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