Effects of Plastic Film Mulching Patterns and Irrigation on Yield of Summer Maize and Greenhouse Gas Emissions Intensity of Field

被引：3

作者：

Luo X.-Q. ^{[1
]}

Zhang A.-F. ^{[2
]}

Chen H.-X. ^{[1
]}

Feng H. ^{[1
,3
]}

机构：

[1] College of Water Conservancy and Architectural Engineering, Northwest A&F University, Yangling

[2] College of Natural Resource and Environment, Northwest A&F University, Yangling

[3] Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling

来源：

Huanjing Kexue/Environmental Science | 2018年 / 39卷 / 11期

关键词：

Film mulching patterns; Greenhouse gas; Greenhouse gas emissions intensity; Irrigation; Summer maize; Yield;

D O I：

10.13227/j.hjkx.201804056

中图分类号：

学科分类号：

摘要：

In order to evaluate the effect of different treatments on yield and greenhouse gas emissions during the summer maize growing season, a two-year film mulching experiment was conducted in 2014 and 2015. In this experiment, the two main experimental factors were rainfed treatment (R) and irrigated treatment (I), and the secondary experimental factors included control treatment (CK), half film mulching treatment (HM), and full film mulching treatment (FM). The emissions of soil greenhouse gases (CO 2 , CH 4 , and N 2 O) were monitored using a static opaque chamber and chromatography method. Moreover, the greenhouse gas emissions intensity (GHGI) was used to evaluate the effect of carbon sequestration in different treatments. The results of this study showed that the yields of the RHM and RFM treatments did not differ significantly in 2014, but increased by 19.6% and 26.8%, respectively, in 2015 compared with that of RCK. The yield of IHM was not improved, and that of IFM significantly increased by 14.1% and 55.8% in 2014 and 2015, respectively, compared with that of ICK. The irrigated treatments only promoted CO 2 emissions in 2015 (P<0.01), and all film mulching treatments (regardless of HM and FM treatments) had no effect on CO 2 emissions under rainfed and irrigated conditions (P>0.05). Irrigated treatments had no effect on the absorption of CH 4 (P>0.05), whereas the film mulching treatments had an inhibitory effect. Compared with values of RCK, the amount of seasonal N 2 O emissions for ICK showed a significant difference in 2015 with a decrease of 22.3%. Compared with values of RCK, the amounts of N 2 O emissions for RHM and RFM had no significant differences in 2014, but significantly decreased by 50.7% and 51.4% in 2015, respectively. Compared with ICK, IHM and IFM significantly decreased the amounts of N 2 O emissions by 47.5% and 54.2% in 2014, and by 9.6% and 52.2% in 2015, respectively. The GHGIs of RHM and RFM were significantly reduced by 60.1% and 61.7% in 2015, respectively, compared with values of RCK, and the GHGIs of IHM and IFM were significantly reduced by 39.7% and 53.2% in 2014, and reduced by 22.2% and 67.5% in 2015, respectively, compared with that of ICK. This means that the effect of FM on reducing GHGI was better than that of HM. It was also found that the significantly reduced GHGI in irrigated treatments may be attributed to the increased yields. Therefore, FM under irrigation conditions was recommended for summer maize for stabilizing the yield and reducing the GHGI. © 2018, Science Press. All right reserved.

引用

页码：5246 / 5256

页数：10

共 44 条

[1] Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, (2014)
[2] Schlesinger W.H., Andrews J.A., Soil respiration and the global carbon cycle, Biogeochemistry, 48, 1, pp. 7-20, (2000)
[3] Wang X.F., Chen B.M., Bi J.Y., Analysis of potential of grain yield increase under film-mulching condition on a county scale, Transactions of the Chinese Society of Agricultural Engineering, 21, 11, pp. 146-149, (2005)
[4] Wang Y.P., Li X.G., Zhu J., Et al., Multi-site assessment of the effects of plastic-film mulch on dryland maize productivity in semiarid areas in China, Agricultural and Forest Meteorology, 220, pp. 160-169, (2016)
[5] Steinmetz Z., Wollmann C., Schaefer M., Et al., Plastic mulching in agriculture. Trading short-term agronomic benefits for long-term soil degradation?, Science of the Total Environment, 550, pp. 690-705, (2016)
[6] Lu H.D., Xue J.Q., Guo D.W., Et al., Effects of black plastic film mulching on soil temperature and humidity in root zone and photosynthetic characteristics of rainfed maize, Transactions of the Chinese Society of Agricultural Engineering, 33, 5, pp. 129-135, (2017)
[7] Li F.M., Yan X., Wang J., Et al., The mechanism of yield decrease of spring wheat resulted from plastic film mulching, Scientia Agricultura Sinica, 34, 3, pp. 330-333, (2001)
[8] Chen H.X., Liu J.J., Zhang A.F., Et al., Effects of straw and plastic film mulching on greenhouse gas emissions in Loess Plateau, China: A field study of 2 consecutive wheat-maize rotation cycles, Science of the Total Environment, 579, pp. 814-824, (2017)
[9] Nan W.G., Yue S.C., Huang H.Z., Et al., Effects of plastic film mulching on soil greenhouse gases (CO 2 , CH 4 and N 2 O) concentration within soil profiles in maize fields on the Loess Plateau, China
[10] Berger S., Kim Y., Kettering J., Et al., Plastic mulching in agriculture-friend or foe of N 2 O emissions? , Agriculture, Ecosystems & Environment, 167, pp. 43-51, (2013)

← 1 2 3 4 5 →