43
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Response of Soil CO 2 Emission and Summer Maize Yield to Plant Density and Straw Mulching in the North China Plain

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Demand for food security and the current global warming situation make high and strict demands on the North China Plain for both food production and the inhibition of agricultural carbon emissions. To explore the most effective way to decrease soil CO 2 emissions and maintain high grain yield, studies were conducted during the 2012 and 2013 summer maize growing seasons to assess the effects of wheat straw mulching on the soil CO 2 emissions and grain yield of summer maize by adding 0 and 0.6 kg m −2 to fields with plant densities of 100 000, 75 000, and 55 000 plants ha −1. The study indicated that straw mulching had some positive effects on summer maize grain yield by improving the 1000-kernel weight. Meanwhile, straw mulching effectively controlled the soil respiration rate and cumulative CO 2 emission flux, particularly in fields planted at a density of 75 000 plants ha −1, which achieved maximum grain yield and minimum carbon emission per unit yield. In addition, soil microbial biomass and microbial activity were significantly higher in mulching treatments than in nonmulching treatments. Consequently, summer maize with straw mulching at 75 000 plants ha −1 is an environmentally friendly option in the North China Plain.

          Related collections

          Most cited references71

          • Record: found
          • Abstract: not found
          • Article: not found

          Soil carbon sequestrations by nitrogen fertilizer application, straw return and no-tillage in China's cropland

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Climate sensitivity uncertainty and the need for energy without CO2 emission.

            The UN Framework Convention on Climate Change calls for "stabilization of greenhouse gas concentrations at a level that would prevent dangerous anthropogenic interference with the climate system." Even if we could determine a "safe" level of interference in the climate system, the sensitivity of global mean temperature to increasing atmospheric CO2 is known perhaps only to a factor of three or less. Here we show how a factor of three uncertainty in climate sensitivity introduces even greater uncertainty in allowable increases in atmospheric CO2 concentration and allowable CO2 emissions. Nevertheless, unless climate sensitivity is low and acceptable amounts of climate change are high, climate stabilization will require a massive transition to CO2 emission-free energy technologies.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Effect of plastic sheet mulch, wheat straw mulch, and maize growth on water loss by evaporation in dryland areas of China

                Bookmark

                Author and article information

                Journal
                ScientificWorldJournal
                ScientificWorldJournal
                TSWJ
                The Scientific World Journal
                Hindawi Publishing Corporation
                2356-6140
                1537-744X
                2014
                23 July 2014
                : 2014
                : 180219
                Affiliations
                1College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, Shandong 271000, China
                2State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong 271000, China
                Author notes

                Academic Editor: Ioannis Tokatlidis

                Article
                10.1155/2014/180219
                4134813
                7108ae63-0574-4152-9792-290397beee39
                Copyright © 2014 Quanru Liu et al.

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 9 April 2014
                : 7 July 2014
                : 12 July 2014
                Categories
                Research Article

                Uncategorized
                Uncategorized

                Comments

                Comment on this article