Effects of Returning Straw and Milk Vetch on Rice Growth and Greenhouse Gas Emissions
The effects of different nitrogen application levels on rice yield and greenhouse gas (NO2, CH4) emissions from rice fields under the combined action of straw and milk vetch. Two treatments were set up in the main area of this experiment: R0 (no straw returned to the field, 0); R1 (amount of straw returned to the field under normal conditions, 6000 kg·hm-2). Before turning the straw back into the field, use a circular knife to cut the straw into 10~13 cm.And 3 kinds of nitrogen application treatments in the sub-district: N1 (no nitrogen application, 0), N2 (nitrogen application, 15 kg·hm-2), N3 (nitrogen application, 30 kg·hm-2), two-factor cross-combination,and a non-nitrogen control CK, total of 7 treatments. The results showed that in 2017, early rice R1N2 treatment increased the most obvious yield, which was 32.44% higher than CK, and late rice R1N1 treatment increased the most significantly, which was 17.91% higher than CK. CH4 emission is positively correlated with the straw returned to the field. N2O is the opposite. The N2O emission flux was highest in the treatment of R1N3, and the CH4 emission flux was the highest in the treatment of R1N2.
Keywords:Straw, Milk vetch, Greenhouse gas, Rice yield
 Lu,p,Shang,Y.,Yang,L.,Han,Y.Effect of Green Manure Rotation on the Change of Nitrogen in Paddy Soil Solution and Rice Yield.soil,2006,03(39):270- 275.
 Liu,W.Research on the Effects of Winter Green Manure and Rice Straw R-eturn on Rice Growth, Soil Properties and Annual Greenhouse Gas Emissions.[Doctoral Dissertation].Wuhan:Huazhong Agricultural University,2015.35.
 Chen,D.,Yi,Z.,Zhou,W.,Tu,N..Effects of the amount of straw returned to the field on soil nutrients and microorganisms in late rice under different soil tillage methods.Journal of Environmental Science,2010,08:1722-1728.
 Li,J. Effect of straw returning and nitrogen reduction on soil carbon and nitrogen content and crop yield. [Doctoral Dissertation].Xian:Northwest A&F University, 2013.
 Sheng,Y.,Cheng,W.,Zhang,H..Effects of Green Manure and Straw Return on Rice Growth and Yield. Chinese rice,2011,04:27-29.
 Zhao,Z,Yue,Y.,Zhang,Y,Lu,X.,Cao,L..Effects of Different Fertilization Conditions on the Characteristics of Greenhouse Gas Emissions in Rice Fields.Journal of Agricultural Environmental Sciences.2014,33(11 ):2273-2278.
 Su,X.,Sun,W.,Wang,Z,etc.Effects of straw returning and chemical fertilizers on soil fertility.Acta Pedologica Sinica.2003,40(4):618-623.
 Aulakh,M.,Doran,J.,Waiters,D..Crop residue type and placement effects on gentrification and internalization. SoilSci.Soc. Am. J.,1991,55: 1020-1025.
 Galbally,I., Fraser,P., Meyer,C.. Biosphere-atmosphere exchange of trace gases over Australia[A]. In:Gifford RM, Barson M M eds.Australia′s Renewable Resources Sustainability and Global Change.Bureau of Rural Resources Proceedings No.14[C].Canberra:AGPS, 1992.117-149.
 Hu,L.,Li,L,Chen,F,Ye,T.,Yang,G..Effects of Different Cultivation Systems on Methane Emission from Rice Fields in Southern China. Ecosystem,2006,15(6):1216-1219.
 Zhu,B,Yi,L.,Hu,Y.,Zeng,Z.,Tang,H.,Xiao,X.,Y ang,G..Effects of fresh ryegrass return to field on fertilizer nitrogen cycle in double-cropping paddy fields.Chinese Agricultural Sciences,2012, 45(13):2764-2770.
 Xiong,Z.,Xing,G.,He,T..,Shi,S.,Sheng,G.,Du,L.. Study on the contribution of legume green manure and fertilizer nitrogen to nitrous oxide emission from double-cropping paddy fields.Acta Pedologica Sinica,2003,40(5):704-710.
 Wang,F,Lin,C,Lin,X.,He,C.,Li,Q.,Li,Y,Huang,G .,Zhong,S..The effect of contin-uous pressing of milk vetch on the yield of Fujian single-cropping rice and the absorption, distribution and residual of fertilizer nitrogen.Journal of Plant Nutrition and Fertilizer,2014,04:896-904.
 Xu,C.,Xie,Z.,Xu,Z.,etc.Effects of chemical fertilizer application on nutrient absorption and dry matter accumulation of early rice under the same amount of milk vetch.Journal of Jiangxi Agriculture,2010(10):13-14.
 Zhou,X,Li,Z.,Xie,J,etc. Effects of reduced chemical fertilizer application on r-ice yield, output value and soil carbon and nitrogen content after utilizati-on of milk vetch.Agricultural Science & Technology, 2015(02):266-271.
 Wang,S.,Zhu,H.,Tang,S,etc.Effects of Combined Application of Milk Vetch and Chemical Fertilizers on Soil Biological Properties in Double-cropping Rice Regions along the Yangtze River in Anhui.Journal of Plant Nutrition and Fertilizer,2015(02):387-395.
 Zhong,X.,Luo,Q..Effect of Milk vetch on Soil Physical and Chemical Prop-erties and Rice Yield. Modern Agricultural Technology,2015(06):222-230.
 Zhou,L.,Ye,H.,Li,D.,etc.Effect of combined application of organic fertilizers on fertilization o f g l e d d i n g p a d d y s o i l . C h i n a S o i l a n d Fertilizer,2016(01):89-93.
 Huang,T,Wang,C.,Xu,L.,etc.Effect of Chinese Milk Vetch Returning to Field for Two Years on Rice Yield and Soil Fertility.Shanghai Agricultural Science and Technology,2016(01):103-104.
 Yang,B.,Huang,G.,Wang,C,etc.Effect of Winter Planting of Green Manure in Paddy Field on Rice Yield and Soil Fertility.Chinese Journal of EcoAgriculture,2013(10):1209-1216.
 Zhang,S..Effect of Returning Milk Vetch into the Field and Reducing the Application of Chemical Fertilizer on Rice Yield.Fujian Agricultural Science and Technology,2011(04):75-77.
 Zhao,D,Yan,T.,Qiao,J,etc.Depth reduction effect of nitrogen fertilizer under the mode of returning green manure to field in Taihu Lake area.Journal of Applied Ecology,2015(06):1673-1678.
 Wang,S.,Huang,Q.,Xu,M.,etc.Variation characteristics of nitrogen fertilizer recovery rate of double-cropping rice in red paddy soil under long-term different fertilization conditions.Journal of Plant Nutrition and Fertilizer,2013(02):297-303.
 Tang,H.,Xiao,X.,Shuai,X.,Tang,W.,Lin,Y.,Tang ,H.,Yang,G..Effects of planting different winter crops in double-cropping rice fields on methane and nitrou-s oxide emissions.Acta Ecologica Sinica,2012,32(5):1481-1489.
 Zhou,J.,Huang,Y,Zong,L.,Wang,Y.,Ronald,L.. Comprehensive effects of differe-nt types of organic fertilizers on CH4 and N2O emissions from rice fields. Environmental science,2003a,24(4):7-12.
 Peng,S.,Yang,S.,Xu,Z..The effect of controlled irrigation on the comprehensi-ve emission of CH4 and N2O and the greenhouse effect of rice fields. Prog-ress in Water Science,2010,21(2):235-240.
 She,L.,Wang,K.,Xie,X.,Chen,M,Lin,W.,Study on soil fertility and yield effects of returning rice straw to the field.Chinese Journal of Eco-Agriculture, 2008,16(1):100-104.
How to Cite
Copyright © 2021 Author(s)
This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.