Distributions of High and Stable Yield Zones for Potato in the Single-cropping Region in Northern China

Sun Shuang; Wang Chunyi; Song Yanling; Yang Xiaoguang

doi:10.11898/1001-7313.20210401

Vol.32, NO.4, 2021

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Article Navigation > Journal of Applied Meteorological Science > 2021 > 32(4): 385-396

Sun Shuang, Wang Chunyi, Song Yanling, et al. Distributions of high and stable yield zones for potato in the single-cropping region in northern China. J Appl Meteor Sci, 2021, 32(4): 385-396. DOI: 10.11898/1001-7313.20210401.

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Sun Shuang, Wang Chunyi, Song Yanling, et al. Distributions of high and stable yield zones for potato in the single-cropping region in northern China. J Appl Meteor Sci, 2021, 32(4): 385-396. DOI: 10.11898/1001-7313.20210401.

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Distributions of High and Stable Yield Zones for Potato in the Single-cropping Region in Northern China

DOI: 10.11898/1001-7313.20210401

1.
State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081
2.
College of Resources and Environmental Science, China Agricultural University, Beijing 100193

Received Date: 2021-04-01
Rev Recd Date: 2021-05-25
Publish Date: 2021-07-31

Abstract

Abstract

The planting area and production of potato in the single-cropping region in northern China (SCRN) are in the first place in China, which plays a prominent role for maintaining national food security. It's essential to understand the potato yield potential in SCRN for regional optimized distribution and improvement of potato production. Two indices, i.e., the average and the coefficient of variation of potato yield potential under different production levels, are employed to investigate the potato yield level and yield stability. Based on the meteorological data from 234 weather stations from 1981 to 2019, the soil data and the crop data in the study region, the yield potentials under different production levels (i.e., potential production level, rainfed potential production level, and the climate-soil potential production level, respectively) are simulated using the well-calibrated and validated Agricultural Production Systems sIMulater of Potato (APSIM-Potato). The study area is classified into four types of zones with different yield patterns: High yield level and high yield stability zones, high yield level and low yield stability zones, low yield level and high yield stability zones, and low yield level and low yield stability zones. Based on the zoning indices and the standards, the distributions of four types of yield zones under different production levels are clarified and the effect of precipitation and soil on yield level and yield stability are analyzed. An increasing trend of the station percentage for high yield zones is defined during the period from 1981 to 2019. The proportion of high yield level and high yield stability zones in the study area decreases gradually with the constraints increasing from the potential production level with the radiation and temperature constrained to the climate-soil potential production level with the radiation, temperature, precipitation and soil constrained. Only 13% of the study area over the study period (1981-2019) shows the yield pattern of high yield level and high yield stability zones under the climate-soil potential production level. The high yield level and low yield stability zones are the potential high yield level and high yield stability zones in the future, which need further attention and effective measures to improve the yield stability of potato. Precipitation shows a greater effect on the potato yield level and yield stability than soil in the study region. To ensure the high and stable yield of potato in the study region, more attentions should be paid on the regions with negative effect of precipitation and soil on the yield level and yield stability. Actions should be taken into considering both on the local irrigation levels and the tillage measures.
- the single-cropping region in northern China;
- potato;
- high-stable yield zones;
- yield potentials;
- APSIM-Potato

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Figures and Tables

Fig. 1 Location of the weather stations in the study area

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Fig. 2 Distributions of the cumulative probability for the average yield potentials(a) and coefficients of variation(b) for potato under different production levels

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Fig. 3 Distributions of yield level zones and yield stability zones under different production levels for potato in the single-cropping region in northern China

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Fig. 4 Temporal trends of the station percentage for the high-yield levels, the low-yield levels, the high-yield stability and low-yield stability for potato in the single-cropping region in northern China

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Fig. 5 Distributions of the high-stable zones for potato under different production levels in the single- cropping region in northern China

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Fig. 6 Distributions of negative changes in yield level and yield stability zones due to precipitation and soil for potato in the single-cropping region in northern China

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Table 1 The definition of yield potentials and influencing factors under different production levels

生产水平	产量层次	影响因素	意义
潜在生产水平	光温产量潜力Y_p	辐射、温度	作物产量的上限
雨养潜在生产水平	气候产量潜力Y_cp	辐射、温度、降水	没有灌溉条件地区作物产量的上限
气候-土壤潜在生产水平	气候-土壤产量潜力Y_csp	辐射、温度、降水、土壤	当地气候资源和土壤因素决定的产量

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Table 2 Scenarios to simulate the yield potentials under different production levels in the APSIM-Potato

产量层次	品种	土壤	管理
产量层次	品种	土壤	灌溉	施肥
光温产量潜力Y_p	克新一号	适宜	充分	充分
气候产量潜力Y_cp	克新一号	适宜	雨养	充分
气候-土壤产量潜力Y_csp	克新一号	实际	雨养	充分

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Table 3 Cropping areas and proportions of yield level zones and yield stability zones under different production levels

区域	潜在生产水平		雨养潜在生产水平		气候-土壤潜在生产水平
区域	面积/(10⁶ km²)	比例/%	面积/(10⁶ km²)	比例/%	面积/(10⁶ km²)	比例/%
高产区	3.31	66	1.70	34	1.53	31
低产区	1.69	34	3.30	66	3.47	69
高稳区	3.10	62	1.43	29	1.27	25
低稳区	1.90	38	3.57	71	3.73	75

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Table 4 Cropping areas and proportions of high-stable zones for potato under different production levels in the study region

区域	潜在生产水平		雨养潜在生产水平		气候-土壤潜在生产水平
区域	面积/(10⁶ km²)	比例/%	面积/(10⁶ km²)	比例/%	面积/(10⁶ km²)	比例/%
高产高稳区	1.99	40	1.26	25	0.65	13
高产低稳区	1.21	24	0.42	8	0.71	14
低产高稳区	0.69	14	0.41	8	1.63	33
低产低稳区	1.11	22	2.91	59	2.01	40

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