Observed Climatic Variations in the Growing Season of Field Crops in Northeast China from 1992 to 2012

LIU Yang; JIANG Wen-lai; XIAO Bi-lin; LEI Bo

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Observed Climatic Variations in the Growing Season of Field Crops in Northeast China from 1992 to 2012

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To determine the potential effects of climate change on crop phenological development and productivity, an integrated analysis was conducted based on the observed climatic and phenological records of Northeast China from 1992 to 2012. A set of quality assurance procedures, including repeated record checks, agro-meteorological station selection, internal consistency checks, temporal outlier checks, spatial outlier checks, and interpolation of missing data, were designed and applied to the phenology datasets of spring maize and paddy rice. Our results indicated that almost all phenological dates of spring maize and paddy rice became increasingly delayed from 1992 to 2012. The duration of the growing season was prolonged, particularly for the grain-iflling stage (GS3). The prolonged growing season was beneifcial to productivity. For spring maize, the average precipitation during GS3 decreased at a rate of 27.46 mm/decade, and the annual accumulated temperature over 10°C increased at a rate of 31.07°C/decade. Farmers initiatively adjusted crop cultivars and selected drought-resistant crops to cope with the challenges of drought.

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《农业科学学报（英文版）》 |2014年第7期|1451-1468|共18页
作者
LIU Yang; JIANG Wen-lai; XIAO Bi-lin; LEI Bo;
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Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, P.R.China;

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Observed Climatic Variations in the Growing Season of Field Crops in Northeast China from 1992 to 2012

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