沤麻废水灌溉对紫花苜蓿草生长和土壤的影响  

Influence of Irrigation with Retting Flax Water on Growth of Alfalfa grass and Soil

作　　者：闫逊[1] 

机构地区：[1]齐齐哈尔大学化工学院环境工程系,黑龙江齐齐哈尔161000

出　　处：《节水灌溉》2011年第11期28-30,共3页Water Saving Irrigation

基　　金：齐齐哈尔市科技局项目(SFG06-28)

摘　　要：采用四种不同浓度沤麻废水对紫花苜蓿草进行灌溉,研究其对紫花苜蓿草生长的作物效应。实验结果表明,不同浓度沤麻废水对紫花苜蓿草一年3茬每茬次的生长均有促进作用,第二茬长势最好。当废水体积浓度比为75%时,株高,茎粗和叶面积分别增加29.7%,16.9%,14.2%,效果明显。同时,灌溉后的土壤中有机质,N,P含量有所增加,Cu2+,Pb2+浓度明显下降,采用合适浓度的沤麻废水灌溉对苜蓿草的生长有促进作用,对土壤的性质有改良作用。The effect of the irrigation with retting flax water with different concentrations on the growth and biological characteristics of Alfalfa grass is studied in this paper.The results indicate that the irrigation with retting flax water can promote the growth of Alfalfa grass with three-crops in one year,and the best effect is at the second crop.If the volume concentration of retting flax water is 75%,the growth rate of the height,stem diameter and leaf area is increased by 29.7%,16.9%,and 14.2%,respectively.Meanwhile,the amounts of organic matter,nitrogen and phosphorous in the soils all increase and the concentrations of Cu2＋ and Pb2＋ decrease after irrigation.This indicates that the irrigation with retting flax water with proper concentrations can promote the growth of Alfalfa grass and improve the soil characteristic.

关 键 词：沤麻废水 紫花苜蓿 土壤 

分 类 号：X73[环境科学与工程—环境工程]