| 黄高宝,李玲玲,张仁陟,蔡立群,Guangdi Li,Kwong Yin CHAN.免耕秸秆覆盖对旱作麦田土壤温度的影响[J].干旱地区农业研究,2006,(5):1~4 |
| 免耕秸秆覆盖对旱作麦田土壤温度的影响 |
| Effects of no-tillage with stubble retention on soil temperature of rainfed spring wheat field |
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| DOI：10.7606/j.issn.1000-7601.2006.05.01 |
| 中文关键词: 春小麦 免耕秸秆覆盖 土壤温度 作物产量 |
| 英文关键词:spring wheat no-tillage with stubble retention soil temperature grain yield |
| 基金项目:中澳合作项目SMCN(LWR2/1999/094)； 甘肃省农牧厅项目(034048)； 中国农村技术开发中心项目(0390993) |
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| 中文摘要: |
| 通过2001~2004年的大田试验研究了免耕秸秆覆盖对黄土高原西部旱地麦田土壤温度的影响。结果表明,土壤温度与气温关系密切;雨季土壤贮水多会导致土壤比热增大而来年早春地温回升慢;免耕秸秆覆盖与传统耕作的地温差不受天气状况的影响。与传统耕作相比,免耕秸秆覆盖可以稳定土壤温度,白天升温较慢,下午至夜间降温更慢。免耕秸秆覆盖降低春小麦全生育期的平均温度0.5℃~1.6℃,拔节至成熟期降低得更多,但对休闲期土壤温度影响不大。免耕秸秆覆盖春小麦经济产量可提高8.8%~28.8%,但产量与耕层平均地温无明显相关性。 |
| 英文摘要: |
| The field experiments were conducted from 2001 to 2005 in Dingxi on the western Loess Plateau to investigate the effects of no-tillage with stubble retention(NTS) on soil temperature in the farming system of rainfed spring wheat.The results showed that soil temperature was affected mainly by air temperature,and also by soil water storage.The more water stored in soil in the summerautumn wet season,the lower the soil temperature was in the following early spring.The difference of soil temperature between NTS and conventional tillage(T) were consistent under different weather conditions.The soil temperature of NTS was more stable than that of T.The average soil temperature of NTS during the wheat growing season was 0.5℃～1.6℃ lower than that of T,and the difference of soil temperature between these two treatments was the greatest in jointing and maturity stage,but there was no significant difference during fallow stage.The yield of spring wheat under NTS was 8.8%%～28.8% higher than that under T;however,there was no significant relationship between average topsoil temperature and grain yield. |
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