Journal of Integrative Agriculture ›› 2021, Vol. 20 ›› Issue (7): 1762-1774.DOI: 10.1016/S2095-3119(20)63561-4

所属专题: 水稻耕作栽培合辑Rice Physiology · Biochemistry · Cultivation · Tillage

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  • 收稿日期:2020-05-15 出版日期:2021-07-01 发布日期:2021-06-02

Effects of temperature and solar radiation on yield of good eating-quality rice in the lower reaches of the Huai River Basin, China

ZHOU Nian-bing1, ZHANG jun2, FANG Shu-liang2, WEI Hai-yan1, ZHANG Hong-cheng
  

  1. 1 Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, P.R.China
    2 Huai’an Agricultural Technology Promotion Center, Huai’an 223001, P.R.China
  • Received:2020-05-15 Online:2021-07-01 Published:2021-06-02
  • Contact: Correspondence ZHANG Hong-cheng, E-mail: hczhang@yzu.edu.cn; WEI Hai-yan, E-mail: wei_haiyan@163.com
  • Supported by:
    This research was funded by the National Key R&D Program of China (2016YFD0300503), the earmarked fund for China Agriculture Research System (CARS0127), the National Natural Science Foundation of China (31971841), the Key Research Program of Jiangsu Province, China (BE2018355), the earmarked fund for Jiangsu Agricultural Industry Technology System, China (JATS[2020]450), and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

摘要:

试验研究了温度和太阳辐射对水稻产量的影响,旨在明确淮河下游水稻高产形成对温度和太阳辐射的需求。试验于2017-2018年以2个中熟中粳和4个迟熟中粳为材料,设置5月10日、5月17日、5月24日、5月31日、6月7日、6月14日和6月21日7个播种期。随着播期的推迟,水稻全生育期天数呈缩短的趋势,主要表现为播种至抽穗期天数的缩短。水稻全生育期有效积温、日平均温度、累积辐射和日均辐射均随播期推迟而减少。与T1播期相比,T2,T3,T4,T5,T6和T7播期分别减产0.12-0.35,0.45-0.89,0.74-1.56,1.41-2.24,2.16-2.90和2.69-3.64 t hm-2。水稻产量与不同生育阶段有效积温呈极显著正相关。温度是影响优质食味水稻在沿淮下游地区形成高产的主要气象因子,当中熟中粳和迟熟中粳获得相对高产时,播种至抽穗期平均温度范围分别为25.8-27.0°C和26.6-27.1°C,抽穗至成熟期分别为20.3-23.3°C和20.3-22.1°C。中熟中粳和迟熟中粳在沿淮下游地区的最佳播期分别为5月15-31日和5月15-18日


Abstract:

We studied the effects of temperature and solar radiation on rice yield with the aim of understanding the temperature and solar radiation requirements for high yield rice production in the lower reaches of the Huai River, China.  Field experiments were conducted with two medium-maturing japonica rice (MMJR) varieties and four late-maturing japonica rice (LMJR) varieties in 2017 and 2018.  Seeds were sown on May 10 (T1), May 17 (T2), May 24 (T3), May 31 (T4), June 7 (T5), June 14 (T6), and June 21 (T7).  The whole growth duration (WGD) of rice was shortened when sowing date was delayed, especially for the duration from sowing to heading (S–H).  The effective accumulated temperature (EAT), mean daily temperature (Tmean), cumulative solar radiation (CSR), and mean daily solar radiation (Rmean) over the WGD decreased when sowing date was delayed.  Compared with T1, yields in T2, T3, T4, T5, T6, and T7 decreased by 0.12–0.35, 0.45–0.89, 0.74–1.56, 1.41–2.24, 2.16–2.90, and 2.69–3.64 t ha−1, respectively.  There was a significant positive correlation between rice yield and EAT in different growth stages.  Temperature was the main factor that affected the yield of good eating-quality rice in the lower reaches of the Huai River.  We found that a relatively high yield can be obtained when the optimal Tmean for medium-maturing japonica rice (MMJR) and late-maturing japonica rice (LMJR) was 25.8–27.0°C and 26.6–27.1°C in the stages from sowing to heading (S–H), and 20.3–23.3°C and 20.3–22.1°C in the stages from heading to maturity (H–M), respectively.  The optimal sowing dates for MMJR and LMJR in the lower reaches of the Huai River were May 15–31 and May 15–18, respectively.

Key words: rice yield ,  temperature ,  solar radiation ,  growth stage