摘要
通过对免耕覆盖条件下土壤温度的研究,揭示了该条件下土壤温度的变化特点。试验表明,免耕覆盖的土壤温度不利于豌豆的出苗,且土壤热通量明显小于其它耕作方式。但其土壤温度日变化显示,该方式的下层土壤温度不易受太阳有效辐射的影响。同时,免耕覆盖下的土壤温度影响到作物干物质的积累。
By studying on soil thermal effects under No -Tillage with Sraw mulch （NTS）, regulation of soil temperature variation was obtained. The trial test indicated that NTS was unfavorourable for seed emergence＇and the soil heat flux was lower than the other tillages obviously. Subsoil temperature variation finder NTS was insusceptible by solar effective radiation through analysis on diurnal temperature data. Meanwhile, the＇soil temperature under NTS affected the dry material accumulation of the crop.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2008年第4期139-142,共4页
Journal of Arid Land Resources and Environment
基金
黄河水利科学研究院中央级公益性科研院所基本科研业务费专项资金(HKY-JBYW-2007-15)资助
关键词
免耕覆盖
土壤温度
土壤温度日变化
土壤热通量
群体生长率
No - tillage with straw mulch
soil temperature
diurnal variation of soil temperature
soil heat flux
crop growth rate
