| 覆盖免耕储水灌溉对豌豆的腾发量和土壤水分效应的影响 |
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| 引用本文： | 景明,张金霞,施炯林.覆盖免耕储水灌溉对豌豆的腾发量和土壤水分效应的影响[J].甘肃农业大学学报,2006,41(5):130-133. |
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| 作者姓名： | 景明 张金霞 施炯林 |
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| 作者单位： | 甘肃农业大学工学院,甘肃,兰州,730070 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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甘肃省省长基金 |
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| 摘 要： | 覆盖免耕可以降低春季豌豆(Pisum sativum)的土壤水分腾发量,且其腾发量比常规耕作和秸秆还田分别减小了29.32%和19.33%.全生育期覆盖免耕可以降低田间水分损耗,提高水分利用率.作物生长的后期,秸秆覆盖有抑制行间蒸发的作用,主要发生在土层0~30 cm,而在30~80 cm抑制蒸发的作用不明显.覆盖免耕对提高作物产量没有明显作用.覆盖免耕水分利用率比常规耕作和秸秆还田分别提高了11.21%和2.93%.覆盖免耕条件下冬季储水最佳定额为975 m3/hm2.
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| 关 键 词： | 覆盖免耕 储水定额 腾发量 水分利用效率 豌豆 |
| 文章编号： | 1003-4315（2006）05-0130-04 |
| 收稿时间： | 2005-11-08 |
| 修稿时间： | 2005-11-08 |
Effects of no-tillage with straw mulch on evapotranspiration and soil water for pea under storage irrigation |
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| JING Ming,ZHANG Jin-xia,SHI Jiong-lin.Effects of no-tillage with straw mulch on evapotranspiration and soil water for pea under storage irrigation[J].Journal of Gansu Agricultural University,2006,41(5):130-133. |
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| Authors: | JING Ming ZHANG Jin-xia SHI Jiong-lin |
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| Institution: | College of Engineering, Gansu Agricultural University, Lanzhou 730070, China |
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| Abstract: | A field experiment was carried out for revealing the impacts of no-tillage with straw mulch on water saving and yield.The results showed that no-tillage with straw mulch(NTS) reduced soil evapotranspiration of pea(Pisum sativum) field in spring by 29.32 % and 19.3 %,compared with conventional tillage on bare ground(CTB)and conventional tillage with straw incorporation(CTS),repectively.During crop growing period,NTS reduced field water consumption and increased water use efficiency(WUE).During the late period of growth,NTS reduced the inter-row soil evaporation.The effect was significant in the soil layer of 0～30 cm,but no effect was found in the layer of 30～80 cm.NTS did not increase yield,however,increased WUE significantly.WUE of NTS was 12.21 % higher than that of CTB and 2.93 % higher than that of CTS.The optimum storage irrigation quota was 975 m~3/hm~2 under NTS. |
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| Keywords: | no-tillage with straw mulch storage irrigation quota evapotranspiration water use efficiency Pisum sativum |
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