【摘要】 周凌云,周刘宗,徐梦雄。农田秸秆覆盖节水效应研究。生态农业研究,1996,4(3):49～52。 利用秸秆覆盖农田,是减少棵间无效蒸发量、提高水资源利用的有效措施。在封丘3年试验结果表明,采用秸秆覆盖麦田可有效地降低耗水系数8.1％～23.2％,覆盖后减少棵间蒸发量26.3％,节约灌溉水量270m~3/hm~2。其节水机理主要是覆盖麦田可产生调节地温,蓄水保墒,提高了田间水的利用率。更多还原

【Abstract】 Using straw to cover wheat field is an effective measure to reduce uneffective evaporation from interplant and increH.sp-:he untilization efficiency of water resources.Results from three years’ experiments showed Thai wr.ier consumption coefficient was reduced by 8.1 to 23.2% and evaporation from soil surface was reduced by 26.3% by straw mulch.The total water saving amounted to 270m3/hm2.The mechanism of straw mulch in water-saving is that straw mulch can adjust soil temperature,conserve soil moisture,inhibit weed growth and improve the utilizaton efficiency of soil water.更多还原