[1]ZHAO Fang,WANG Rui,TIAN Baoxing,et al.Evolution Characteristics of Precipitation Use Efficiency Potentiality of Maize in Dry Farming Area of Heilongjiang Province[J].Research of Soil and Water Conservation,2019,26(02):345-351.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 02
Page number:
345-351
Column:
Public date:
2019-04-28
- Title:
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Evolution Characteristics of Precipitation Use Efficiency Potentiality of Maize in Dry Farming Area of Heilongjiang Province
- Author(s):
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ZHAO Fang1,2,3, WANG Rui1, TIAN Baoxing4, ZHAO Huiying4, LIN Weinan5,6, LI Xiufen4
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1. School of Agriculture, Ningxia University, Yinchuan 750021, China;
2. Harbin Meteorological Bureau, Harbin 150028, China;
3. Innovation and Opening Laboratory of Eco-Meteorology in Northeast China, CMA, Harbin 150030, China;
4. Heilongjiang Province Institute of Meteorological Sciences, Harbin 150030, China
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- Keywords:
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climatic resources; potential productivity; dry farming maize; Heilongjiang Province; precipitation use efficiency
- CLC:
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S513.3
- DOI:
-
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- Abstract:
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Study on the precipitation use efficiency potentiality of maize can reflect the contribution of precipitation to its output and is of great significance to crop distribution. Based on the daily meteorological data of 80 weather stations from 1961 to 2017, maize growth period data and maize yield data, the spatial-temporal evolution characteristics of the precipitation use efficiency potentiality of maize in dry farming area were analyzed by using the methods of Empirical Orthogonal Function (EOF), wavelet transformation analysis and mathematical statistics. The results showed that the evolution characteristics of the precipitation use efficiency potentiality of maize presented a phase micro rise situation from 1961 to 2017. The amplitude was 33~59 kg/(hm2·mm), and there were 28-year, 15-year, 5-year and 8-year periodic changes, respectively. It can be divided into two stages. The rising stages were observed from 1961 to 1979 and from 1992 to 1998, respectively, while decreasing stages occurred from 1980 to 1991 and from 1999 to 2017, respectively. The high value area of the precipitation use efficiency potentiality of maize was a closed area. The approximate location includes Heihe, southeastern Qiqihar, Daqing, Harbin, Qitaihe, Shuangyashan, Jiamusi, Hegang and Yichun. The maximum value was observed in Wudalianchi, Heihe. The low value center is located in the northern part of Huma, Greater Khingan Range, and Ning’an District, Mudanjiang. In the high-value area, the amplitude of the precipitation use efficiency potentiality was stable, while in the other regions, it gradually decreased from the high-value region to the outward side. The precipitation use efficiency potentiality of maize can improved with a potential of 30~50 kg/(hm2·mm) in the closed area surrounded by the Southeast Qiqihar, Daqing and Harbin. But in the northern region of Greater Khingan Range, the potential promotion is less than 10 kg/(hm2·mm). In different maize planting areas, the precipitation use efficiency potentiality of maize can be improved by adopting dense planting, soil moisture conservation tillage, timely fertilization and so on.