开发渭北旱塬农田蒸发水新技术  

The New Technique of Exploitating Farmland Evaporation Water on Weibei Arid Highland

作　　者：李旭辉[1] 李立科[1] 赵二龙[1] 王兆华[2] 

机构地区：[1]西北农林科技大学资源环境学院 [2]西北农林科技大学经济管理学院,陕西杨凌712100

出　　处：《水土保持研究》2007年第3期234-236,共3页Research of Soil and Water Conservation

摘　　要：分析总结了开发农田蒸发水的可行性、可能性,调查了降雨量、蒸发水对旱区作物产量的影响及试验研究,提出了“留茬免耕秸秆全程覆盖”耕作新技术。在我们试验条件下,“留茬免耕秸秆全程覆盖”技术较传统耕作技术,小麦增产56.4%,玉米增产87%,夏闲期土壤含水量增加4.4%。多年试验、示范结果表明:“留茬免耕秸秆全程覆盖”是减少农田蒸发水、解决旱地农田干旱、增产增收、保护生态、培肥地力、投资少、易操作的一项先进实用技术。The authors analyse and summarize fecesiblcy and probably of exploitation farmland evaporation water; At the same time,the effects of precipitation and evaporation to grain yield were investigated and field experiments ware conducted, with “left stubble non-tillage straw mulching for whole growing process”cultivated new technique. On our experiment condition,with the technique raising wheat yield 56.4%, raising maine yield 87%, soils content of water increasing 4.4% in 0～200 mm in summer fallows than tradition tillage technique. The numerous experiment and demonstrate results shown：“ left stubble nontillage straw mulching for whole growing process” is the advanced applied technique of reducing farmland evaporation, improving dryland, increasing yiely and income, protecting ecology, fertility raising, little input, operating easy.

关 键 词：渭北旱塬 农田蒸发水 全程覆盖 新技术 

分 类 号：S152.73[农业科学—土壤学]