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黑龙江省玉米干旱与低温冷害复合逆境对产量的影响*
姜丽霞, 曲辉辉, 李秀芬, 宫丽娟, 翟墨, 于瑛楠, 赵慧颖
(黑龙江省气象科学研究所)
Effect of drought and cold damage cross-stress on maize yield in Heilongjiang Province
Jiang Li-xia, Qu Hui-hui, Li Xiu-fen, Gong Li-juan, Zhai Mo, Yu Ying-nan, Zhao Hui-ying
(Heilongjiang Province Institute of Meteorological Science)
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投稿时间:2019-07-21    修订日期:2020-11-26
中文摘要: 利用1981-2016年黑龙江省玉米农业气象观测站的资料,引入中华人民共和国气象行业标准中水分亏缺指数(KCWDI)、≥10℃积温距平指标,分别对玉米出苗-乳熟期干旱、低温冷害进行判识,规定同一站同一年内干旱、冷害均有发生为两种灾害混合发生,并分析其时空分布特征,以数理统计方法构建KCWDI、≥10℃积温距平与玉米产量的关系模型,同时应用比较方法探讨两种灾害混发的温水逆境对玉米产量的影响。研究结果表明:1981-2016年间,研究区玉米出苗-乳熟期KCWDI呈波动式下降变化(P>0.01),空间上表现为西多东少的经向规律,≥10℃积温距平呈显著增加趋势(P<0.01),具有北低南高的空间特征,两种灾害指标的变化较好表达了研究区水资源空间配置特征及气候变暖趋势;分析期内,各站玉米出苗-乳熟期干旱、冷害混合发生年数为3~9a,随时间呈减少趋势,1990年代中期以前密集发生,之后发生频率下降,空间上呈西多东少趋势,松嫩平原西部为频发区;玉米出苗-乳熟期≥10℃积温距平、KCWDI与玉米单产存在显著或极显著的相关关系(P<0.05或P<0.01),在一定温度、水分范围内,≥10℃积温距平减少、KCWDI增大,玉米产量呈下降趋势,反之呈升高趋势;总体上,存在干旱、低温冷害混发程度愈重则产量愈低的趋势。
Abstract:Based on the observation data from agro-meteorological stations from 1981 to 2016 in Heilongjiang province,By using the indicators of water deficiency index(KCWDI) and accumulated temperature anomaly ≥10℃ from the People"s Republic of China meteorological industry standards for assessment of drought and cold damage to maize during seedling-milk ripening stage separately, this paper stipulated that drought and cold damage cross-stress occurred in the same year in the same station, and the temporal and spatial distribution of it were analyzed. The relational model between KCWDI, accumulated temperature anomaly ≥10℃ and maize yield was constructed by mathematical statistical method, and the effects of two kinds of disasters on maize yield were investigated by comparative method. The results showed that KCWDI fluctuated and declined(P>0.05), and its longitude change was that KCWDI was high in the west and it was low in the East during maize seedling-seventh leaf period in the study area, and accumulated temperature anomaly ≥10℃ increased(P<0.01)from 1981 to 2016, and the latitudeSchange was that accumulated temperature anomaly ≥10℃ was low in the north and it was high in the south. The Change of this two kind of disaster indicators was consistent with spatial distribution of water resources and climate warming trend in the research area; During the analysis period, the sum of years of drought and cold damage
文章编号:201907210287     中图分类号:    文献标志码:
基金项目:(2019SYIAE04)、国家自然科学(31671575,31671576)、(2018SYIAEHZ1)、stqx2019zd01
引用文本:
姜丽霞,曲辉辉,李秀芬,宫丽娟,翟墨,于瑛楠,赵慧颖,0.Effect of drought and cold damage cross-stress on maize yield in Heilongjiang Province[J].Meteor Mon,():-.
Jiang Li-xia,Qu Hui-hui,Li Xiu-fen,Gong Li-juan,Zhai Mo,Yu Ying-nan,Zhao Hui-ying,0.Effect of drought and cold damage cross-stress on maize yield in Heilongjiang Province[J].Meteor Mon,():-.