| 苏子友,杨正礼,王德莲,蔡典雄,姚宇卿,吕军杰,张洁.豫西黄土坡耕地保护性耕作保水效果研究[J].干旱地区农业研究,2004,(3):6~8 |
| 豫西黄土坡耕地保护性耕作保水效果研究 |
| Effect of conservation tillage on water conserving on loess slope-land in west Henan Province |
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| DOI：10.7606/j.issn.1000-7601.2004.03.02 |
| 中文关键词: 保护性耕作 入渗 土壤含水量 降雨贮蓄率 冬小麦产量 水分利用效率 |
| 英文关键词:conservation tillage infiltration soil moisture content rainfall storage ratio yield of winter wheat water use efficiency |
| 基金项目:国家863重大节水项目(2002AA2Z4021)；中比国际合作项目 |
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| 中文摘要: |
| 采用田间模拟小区和田间自然小区试验相结合的方法,研究了不同处理条件下降雨入渗、休闲期降水的贮蓄率、不同土壤层次间接纳降水的增量、冬小麦产量及水分利用效率等因素。研究结果表明,保护性耕作有延缓径流,增加降雨入渗的作用,其稳定入渗率是保护性耕作的1.22～6.67倍,在降雨强度为68mm/h时其地表产生径流时间比传统耕作晚6～15min;免耕和深松处理土体内的含水量、接纳降水的能力明显高于传统耕作,休闲期两个处理降雨贮蓄率分别比对照高出6.5%和7.4%,冬小麦产量分别高17.78%和16.1%,水分利用效率分别高1.52kg/(mm·hm2)和1.00kg/(mm·hm2)。 |
| 英文摘要: |
| With field simulation experiment and field experiment , the paper studies the effect of conservation tillage on rainfall infiltration, the increasing of soil moisture in different soil depth, and the yield and water use efficiency of winter wheat. The results show that the conservation tillage can remarkably delay runoff and improved the infiltration rate compared to conventional tillage. The final infiltration rate could be 1.226.67 times compared to that of conventional tillage. No tillage and subsoiling tillage could increase rainfall storage by 6.5% and 7.4%, yield of winter wheat by 17.78% and 16.1%, and water use efficiency by 1.52 kg/ (mm·hm2) and 1.00 kg/ (mm·hm2). |
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