| Study on long-term site-specific conservation tillage on sloping dryland in the Western part of Henan——Ⅱ. Effects of no-till and subsoiling with mulching on soil temperature in wheat field |
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| DOI：10.7606/j.issn.1000-7601.2010.02.12 |
| Key Words: long-term site-specific trials soil temperature conservation tillage conventional tillage |
| Author Name | Affiliation | | WANG Yuhong | Luoyang Academy of Agricultural Sciences, Luoyang, He'nan 471022, China | | CAI Dianxiong | Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 10082, China | | YAO Yuqing | Luoyang Academy of Agricultural Sciences, Luoyang, He'nan 471022, China | | WU Xueping | Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 10082, China | | Lü Junjie | Luoyang Academy of Agricultural Sciences, Luoyang, He'nan 471022, China | | LI Junhong | Luoyang Academy of Agricultural Sciences, Luoyang, He'nan 471022, China | | DING Zhiqing | Luoyang Academy of Agricultural Sciences, Luoyang, He'nan 471022, China | | ZHANG Jie | Luoyang Academy of Agricultural Sciences, Luoyang, He'nan 471022, China |
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| Abstract: |
| On based long-term site-specific trials, this paper studied the effects of conservation tillage(subsoiling tillage with mulching, ST and no-till with mulching, NT) and conventional tillage(CT) on soil temperature on dryland sloping farming in the western part of Henan. Temperature data loggers were used to record the temperature at the depth of 0, 5, 15 cm and 30 cm under the treatments every 2 hours from Oct. 2004 to Sept. 2005. The results showed： （1） ST and NT could weaken the change of average soil temperature of 0～30 cm layer every rmonth in a year. The soil temperature under the two conservation tillages was higher from Dec. 2004 to Jan. 2005, obviously lower from Jun to Sept. 2005, compared with CT. （2） ST and NT had the effect that temperature of surface soil was increased in higher temperature, decreased in lower temperature during 24 hour of a day. The effect was weakened with soil layer adding up. At 15 cm layer, soil temperature under ST and NT was lower from winter wheat planting to joiting stage. Furthermore, ST made the temperature higher than that of CK. (3) Winter wheat growth was restrained under the treatments of ST and NT before wheat joiting, which made height fall, tillers, leaves and second roots decrease, dry matter accumulation rate slow down. After that, the items except tillers under the two conservation tillages gradually overtake that of CK. |
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