| 河西绿洲灌区留茬覆盖免耕保护性耕作的增产节水效应 |
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| 引用本文： | 张凤云,张恩和,景锐,黄高宝,成雪峰.河西绿洲灌区留茬覆盖免耕保护性耕作的增产节水效应[J].草业学报,2007,16(2):94-98. |
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| 作者姓名： | 张凤云 张恩和 景锐 黄高宝 成雪峰 |
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| 作者单位： | 甘肃农业大学农业生态工程研究所,甘肃,兰州,730070;山东菏泽学院,山东,菏泽,274015;甘肃农业大学农业生态工程研究所,甘肃,兰州,730070;山东菏泽学院,山东,菏泽,274015 |
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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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| 摘 要： | 试验设20 cm留茬压倒(NPS20),40 cm留茬压倒(NPS40),40 cm立秆(NS40),20 cm立秆(NS20),6 750kg/hm2覆盖(NSB40),3 750 kg/hm2覆盖(NSB20)和传统耕作(CT)7个处理,在节水1 950 m3/hm2的条件下,研究了不同的秸秆覆盖量、留茬高度和秸秆处理对小麦产量、水分利用效率(WUE)和不同时期土壤水分的影响。结果表明,留茬覆盖免耕保护性耕作提高了春小麦的产量,NPS20,NPS40,NS40,NS20,NSB40和NSB20较CT分别增产53.08%,46.59%,40.81%,19.93%,17.33%和4.34%;留茬覆盖免耕保护性耕作提高了春小麦的水分利用效率(WUE)(NPS20,NS40,NPS40,NS20,NSB40,NSB20分别较CT提高58.02%,43.40%,47.27%,23.78%,20.69%,8.56%),但增加了小麦生育期土壤水分支出;不同处理在不同时期对土壤水分的影响不同。
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| 关 键 词： | 留茬 覆盖免耕 保护性耕作 节水效应 |
| 文章编号： | 1004-5759（2007）02-0094-05 |
| 收稿时间： | 2006-01-07 |
| 修稿时间： | 2006年1月7日 |
The influences of conservation tillage with straw standing or covering on grain yield and soil water content in Hexi oasis |
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| ZHANG Feng-yun,ZHANG En-he,JING Rui,HUANG Gao-bao,CHENG Xue-feng.The influences of conservation tillage with straw standing or covering on grain yield and soil water content in Hexi oasis[J].Acta Prataculturae Sinica,2007,16(2):94-98. |
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| Authors: | ZHANG Feng-yun ZHANG En-he JING Rui HUANG Gao-bao CHENG Xue-feng |
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| Institution: | 1. Agro-ecological Engineering Institute, Gansu Agricultural University, Lanzhou 730070,China;2. Department of resources and environment science,Heze College, Heze 274015, China |
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| Abstract: | The influences of different qualities of mulched straw,height of standing straw,and straw treating style on grain yield,water use efficiency(WUE) and soil water content of different growth stages were studied in a field experiment aimed at saving 1 950 m3/hm2 water in the Hexi corridor.Grain yields were improved by conservation tillage with straw cover or straw standing,and that of NPS20,NPS40,NS40,NS20,NSB40 and NSB20 were increased by 53.08%,46.59%,40.81%,19.93%,17.33% and 4.34% respectively compared with the CT.WUE and soil water consumption during spring wheat growth were also increased by conservation treatments,and WUE of NPS20,NS40,NPS40,NS20,NSB40,NSB20 were increased by 58.02%,43.40%,47.27%,23.78%,20.69%,8.56% respectively compared with the CT.The influences of different treatments on soil water content of different stages were different. |
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| Keywords: | straw standing conservation tillage with straw cover conservation tillage water-saving effect |
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