摘要
采用密闭箱法对不同施肥条件下小麦田中羰基硫 (COS)、二硫化碳 (CS2 )和二甲基硫 (DMS)的释放情况进行了监测 .结果表明 ,小麦生长过程对COS、CS2 和DMS释放影响显著 ,小麦对COS有明显吸收作用 ,DMS和CS2 是麦田中释放的主要含硫气体 .COS和CS2 释放速率昼夜变化明显 .仅施用有机肥的麦田 ,硫释放总量高于其它田块 .不同施肥条件的田块 ,硫释放总量范围在 -1 4 0～ 0 79mg·m- 2
Emission rates of carbonyl sulfide (COS), carbon disulfide (CS 2) and dimethyl sulfide (DMS) to the atmosphere from wheat fields treated with different fertilizers were measured by using the closed chamber method. The results showed that the emission rate of COS, CS 2 and DMS was affected by wheat growth and COS was absorbed by the plants. DMS and CS 2 were the predominant sulfur gases emitted from these fields. The diurnal variations of emission rates of COS and CS 2 were obvious. The sulfur flux in the plot treated with organic fertilizer was higher than that in the other plots. The sulfur fluxes from different plots were in the range of -1 40 to 0 79 mg·m -2 .
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第4期25-28,共4页
Environmental Science
基金
国家自然科学基金资助项目 !(2 96 770 0 7)
