Fertilization model and assessment of net greenhouse gas balance of summer maize in tidal soil area around Bohai sea

doi:10.14088/j.cnki.issn0439-8114.2020.20.013

Abstract

Abstract: The field plot experiment was carried out to establish fertilizer effect models of nitrogen,phosphorus and potassium fertilizer in different yielding fields in the tidal area around Bohai sea.The direct and indirect emission laws of greenhouse gases andthe net greenhouse gas emission balance were analyzed in the corn farmland ecosystem.The results show that the greenhouse gas emission intensity of the optimal economic fertilization amount of high,medium and low yield fields is smaller than the highest yield fertilization amount,the potential for warming is large,and it is a “sink”of greenhouse gases,which can be used as a scientific fertilization level for summer maize production in this area.

Key words: tidal area around Bohai sea, summer maize, greenhouse gases, greenhouse effect evaluation

CLC Number:

S513

LIU Quan-feng, LIU Zhen-zhen, LAI De-qiang, SUN Yi, CHEN Xin, LI Ya-jing, WU Ting, MAO Cai-yun. Fertilization model and assessment of net greenhouse gas balance of summer maize in tidal soil area around Bohai sea[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(20): 61-65.

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