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覆膜和氮肥用量对雨养春玉米农田 甲烷吸收的影响
李晓莎1,2; 岳善超2; 李世清1,2; 刘建粲1,2
2017
Source Publication干 旱 地 区 农 业 研 究
Volume35Issue:4Pages:1-9
Abstract

为了研究覆膜与氮肥用量对雨养春玉米农田 CH 4 吸收的影响,在覆膜(FM)与不覆膜(BP)条件下分别设置
了0、100、250、400 kg·hm
-2
4 个氮肥水平,共8 个处理,采用静态暗箱 -气相色谱法对农田 CH 4 的吸收通量进行连续观
测,同时观测影响通量变化的温度、水分以及硝铵态氮等环境因子。结果表明:旱作春玉米农田是甲烷的汇,休闲期的累
积吸收量占年总吸收量48% ~60%,在年总吸收量中占了不可忽视的一部分; FM0、FM100、FM250、FM400 和 BP0、BP100、
BP250、BP400 在2014—2015 年的年总吸收量分别为0.99、1.38、1.3、1.37 CH 4 -C kg·hm
-2 和1.43、1.77、1.68、1.56 CH
4 -
C kg·hm
-2 ,地膜覆盖和施氮量的增加均未显著改变雨养春玉米农田对 CH
4 的吸收量; 雨养春玉米农田土壤 CH 4 的吸
收速率与0、10 cm 土层土壤温度呈极显著正相关,与土壤孔隙含水量(WFPS)、NH 4
+
-N 之间呈极显著负相关,不覆膜条
件下与 NO 3

-N 之间呈负相关关系,且达到极显著水平(P <0.01)。

Other Abstract

Understanding the response of CH 4 absorption to film mulching and nitrogen fertilizer is of value for im-
proving management practices. We monitored the CH 4 absorption from plastic film - mulched and no-mulched maize
fields that received different N application rates (0,100,250 kg·hm
-2
and 400 kg·hm
-2 ) using the static chamber
technique. In addition,the impact factors (soil inorganic nitrogen,soil temperature and moisture,etc. ) were estimated.
The results showed that the rain-fed maize fields acted as a sink for CH 4 ,and 48% ~60% of the annual uptake was dur-
ing the fallow period. The annual CH 4 uptake rate was 0.99,1.38,1.3,1.37,1.43,1.77,1.68,1.56 CH 4 -C kg·
hm
-2
for FM0,FM100,FM250,FM400,BP0,BP100,BP250 and BP400 treatment in 2014—2015,respectively. Both
film mulching and N fertilizer did not increase the CH 4 uptake. The soil CH 4 uptake was positively correlated with 0 cm
and 10 cm soil temperature,but negatively correlated with soil WFPS and soil NH 4
+
-N concentration. The CH 4 uptake
was negatively correlated with soil NO 3

-N concentration under no-mulched treatments.

Keyword覆膜 氮肥 Ch 4 雨养 春玉米农田
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8680
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学资源环境学院,陕西 杨凌 712100
2.西北农林科技大学,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西 杨凌 712100
Recommended Citation
GB/T 7714
李晓莎,岳善超,李世清,等. 覆膜和氮肥用量对雨养春玉米农田 甲烷吸收的影响[J]. 干 旱 地 区 农 业 研 究,2017,35(4):1-9.
APA 李晓莎,岳善超,李世清,&刘建粲.(2017).覆膜和氮肥用量对雨养春玉米农田 甲烷吸收的影响.干 旱 地 区 农 业 研 究,35(4),1-9.
MLA 李晓莎,et al."覆膜和氮肥用量对雨养春玉米农田 甲烷吸收的影响".干 旱 地 区 农 业 研 究 35.4(2017):1-9.
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