| 覆盖免耕的节水效应与土壤温度的变化 |
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| 引用本文： | 王明权,李效栋,景明.覆盖免耕的节水效应与土壤温度的变化[J].甘肃农业大学学报,2007,42(1):119-122. |
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| 作者姓名： | 王明权 李效栋 景明 |
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| 作者单位： | 1. 甘肃农业大学工学院,甘肃,兰州,730070
2. 甘肃省水利厅,甘肃,兰州,730000 |
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| 基金项目： | 甘肃省省长基金项目(RS015-A41-006). |
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| 摘 要： | 通过对覆盖免耕、秸秆还田和常规耕作的研究表明:覆盖免耕从作物播种开始到收获的时段内较秸秆还田和常规耕作可以分别节水352.2 m3/hm2、441.4 m3/hm2.对豌豆生长期内土壤表层、5、10、152、0 cm和25 cm观测表明:早上8∶00温度较低时覆盖免耕可以提高土壤表层的温度;在温度较高的下午14∶00,覆盖免耕可以减缓土壤温度升高过快;在温度降低的晚上20∶00,覆盖免耕可以减缓土壤温度的降低.因此,覆盖免耕可使土壤的温度保持在一个相对稳定的状态下,创造良好的农田小气候,有利于作物的生长.
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| 关 键 词： | 覆盖免耕 节水 土壤积温 |
| 文章编号： | 1003-4315（2007）01-0119-04 |
| 修稿时间： | 2006-03-27 |
Effects of no-tillage with straw mulch on water saving and soil temperature |
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| WANG Ming-quan,LI Xiao-dong,JING Ming.Effects of no-tillage with straw mulch on water saving and soil temperature[J].Journal of Gansu Agricultural University,2007,42(1):119-122. |
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| Authors: | WANG Ming-quan LI Xiao-dong JING Ming |
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| Institution: | 1 College of Engineerlng,Gansu Agricultural University,Lanzhou 730070; 2. Gansu Water Conservancy Bureau,Lanzhou 730000,China |
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| Abstract: | Effectiveness of water saving was studied under no-tillage with straw mulch(NTS),conventional tillage with straw incorporated(CTS) and conventional tillage on bare ground(CTB).The results showed that NTS saved 352.2 m3/hm2,441.4 m3/hm2of water respectively than CTS and CTB from planting to harvest.The soil temperature in 0.25 cm depth was monitored during growing period of pea.The results showed that NTS increased soil temperature in the morning when air temperature was low,but reduced the rate of temperature increment in the afternoon when temperature was higher,and also reduced the rate of temperature decrement in the evening.Thereby no-tillage with straw mulch could keep the stability of soil temperature,and is beneficial for the crop growth. |
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| Keywords: | no-tillage with straw mulch water saving soil accumulated temperature |
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