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[1]LI Wei,WANG Xuelin,YANG Taiming,et al.Climate Production Potential Assessment of Single-Season Rice in Jianghuai Watershed[J].Research of Soil and Water Conservation,2022,29(03):276-283.

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Climate Production Potential Assessment of Single-Season Rice in Jianghuai Watershed

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 03 Page number: 276-283 Column: Public date: 2022-04-20

Title:: Climate Production Potential Assessment of Single-Season Rice in Jianghuai Watershed

Author(s):: LI Wei¹, WANG Xuelin¹, YANG Taiming², JIANG Yuelin³, LIU Dongqing⁴, WANG Zhi¹; (1.Hefei Meteorological Bureau, Hefei 230000, China; 2.Anhui Institute of Meteorological Science, Hefei 230000, China; 3.Anhui Agricultural University, Hefei 230000, China; 4.Institute of Land and National Development, Zhejiang University, Hangzhou 310000, China)

Keywords:: single-season rice; climate production potential; utilization of climatic resources; spatiotemporal trend

CLC:: S162.3

DOI:: -

Abstract:: In order to found out the limiting meteorological factors of rice in the Jianghuai watershed area, and to improve the actual rice productivity in the study area, based on daily ground observation data of 13 sites in Jianghuai Watershed area from 1980 to 2016, growing season photosynthesis(Y_Q)of Jianghuai Watershed area single-season rice, the potential productivities of potential(Y_T), climate productive potential(Y_W)and the time and space distribution of climate resource utilization were studied, and the meteorological factors impact on the climate productive potential were analyzed. The results show that Y_Q, Y_T and Y_Win the watershed area of Jianghuai River Basin generally showed a downward trend, and the utilization rate of climate resources showed a slow upward trend with the change of time; the spatial distribution of Y_Q and Y_T in the watershed area of Jianghuai was relatively consistent, and they distributed in a stepped parallel manner along the water-splitting ridge line; to the northwest of the ridge line of Jianghuai Watershed, Y_Q and Y_Twere high; to the vicinity of the ridge line, Y_Q and Y_T were medium; to the southeast of the ridge line, Y_Q and Y_T were low; Y_W was high and Y_W was low in the southwest and northeast of Jianghuai Watershed; the utilization rate of climatic resources increased from west to east in spatial distribution; precipitation, daily maximum temperature and reference crop evapotranspiration were the three main meteorological factors affecting the climatic production potential of the study area. These results can provide the theoretical basis for the optimization and adjustment of rice planting in the area of Jianghuai Watershed.

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Last Update: 2022-04-20