Lang Man, Cai Zu-cong
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
Ying Yong Sheng Tai Xue Bao. 2008 Dec;19(12):2745-50.
A 14 d incubation test at 60% WHC and 25 degrees C was conducted to study the effects of fungicide chlorothalonil at its application rates of 0, 5.5 mg x kg(-1) (field application rate, FR), 110 mg x kg(-1) (20FR) and 220 mg x kg(-1) (40FR) on the nitrous oxide (N2O) and carbon dioxide (CO2) emissions from acidic, neutral, and alkaline soils. The results indicated that the effects of chlorothalonil on the two gases emissions depended on its application rate and soil type. Comparing with no chlorothalonil application, the chlorothalonil at 20FR and 40FR inhibited the N2O emission from acid soil significantly, while that at FR, 20FR and 40FR stimulated the N2O emission from neutral soil, with the strongest effect at FR. Higher application rates (20FR and 40FR) of chlorothalonil inhibited the N2O emission from alkaline soil at the early stage of incubation, but stimulated it at late incubation stage. Chlorothalonil at FR had no obvious effects on the CO2 emission from test soils, but that at 20FR and 40FR promoted the CO2 emission from acid soil while inhibited it from neutral and alkaline soils significantly.
在60%的田间持水量和25摄氏度条件下进行了为期14天的培养试验，以研究杀菌剂百菌清在0、5.5毫克/千克（田间施用量，FR）、110毫克/千克（20FR）和220毫克/千克（40FR）施用量下对酸性、中性和碱性土壤中一氧化二氮（N2O）和二氧化碳（CO2）排放的影响。结果表明，百菌清对两种气体排放的影响取决于其施用量和土壤类型。与不施用百菌清相比，20FR和40FR的百菌清显著抑制了酸性土壤中N2O的排放，而FR、20FR和40FR的百菌清则促进了中性土壤中N2O的排放，其中FR的促进作用最强。较高施用量（20FR和40FR）的百菌清在培养初期抑制了碱性土壤中N2O的排放，但在培养后期促进了其排放。FR的百菌清对试验土壤中CO2的排放没有明显影响，但20FR和40FR的百菌清促进了酸性土壤中CO2的排放，同时显著抑制了中性和碱性土壤中CO2的排放。
