Temporal and Spatial Variation of Rice Suitable Growing Region in Heilongjiang Province under Climate Warming

China Rural Water and Hydropower ›› 2020 ›› (2) : 134-137.

CAI Shao-jie1 ，XU Feng-zeng2 ，ZHANG Xiao-yong2 ，WANG Ke-chun1 ，WEI Qi 1

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It is important to study the change of agricultural production conditions and its countermeasures in the background of climate change, which is the current international research focus. The change of suitable planting area for main crops is a significant aspect. In order to study the effect of climate warming on the rice production in the cold area of Heilongjiang Province, and develop the regionalization and rational allocation of agricultural planting in the rice planting area of Heilongjiang region in China, exploring spatiotemporal variation of suitable planting area for rice is necessary. In this paper, the meteorological data of 15 stations in rice planting area of Heilongjiang Province from 1956 to 2015 are collected, and the change trend of temperature and its cumulative process are analyzed. Based on the requirements of rice light and temperature, the characteristics of accumulated temperature zone and time window suitable for rice planting are analyzed. The results show that: in the past 60 years, the suitable planting range of Heilongjiang rice has been expanding northward; The 2 300 ℃ and 2 400 ℃ accumulated temperature line extends from 48.86 °N and 48.39 °N to 50.12 °N and 49.49 °N. The suitable planting time window of rice in Heilongjiang Province has increased significantly, which meets the planting conditions of rice in different growing seasons.

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climatic warming / rice growing area / IDW spatial interpolation / planting time window

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CAI Shao-jie ，XU Feng-zeng ，ZHANG Xiao-yong ，WANG Ke-chun ，WEI Qi . Temporal and Spatial Variation of Rice Suitable Growing Region in Heilongjiang Province under Climate Warming. China Rural Water and Hydropower. 2020, 0(2): 134-137

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Received	Revised	Published
2019-04-30	2019-07-10	2020-02-15
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2020-08-16

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