摘要
本文采用热平衡法研究河套灌区小美旱杨(populus sim onii×(Populuspyram idalis+Salixmatsudana)cv.Pop-laris)防护林减少土壤蒸发的作用,以及节水、减少土壤表层积盐的意义。主要结论为:8月上旬小美旱杨防护林减少土壤蒸发为239m3/hm2,相当于同期灌溉定额的1/2;小美旱杨防护林减少土壤蒸发可有效减少田间土壤表层的盐分积累,9月份在1hm2农田中可减少1 t盐类物质在土壤表层积累。
Reducing soil evaporation, the effect of saving water and reducing salt ions content of the top layer of soil were studied by thermal equilibrium method. The results showed that the soil evaporation was reduced by the Populus simonii × （ Populuslus pyramidolis ＋ Salix matsudana） cv. Poplaris and the evaporation was 239m^3/hm^2 ,equivalent to half of the irrigation quota in the same period, the reducing soil evaporation resulted in low salt accumulation in the top layer of soil, On September,lookg of salts accumulated in the top layer of soil in the field of 1 hm^2 can be reduced.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2005年第4期14-16,共3页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古科技厅"十五"攻关项目(20010205)
关键词
农田防护林
小美旱杨
土壤蒸发
shelterbelt
soil evaporation
Populus Populus simonii×Populus pyramidalis＋Salixmatsudana） cv. Poplaris）
