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黑龙江省玉米播种下限温度指标阈值研究
闫平1, 王萍1, 季生太2, 朱海霞1, 姜丽霞1
(1.黑龙江省气象院士工作站;2.中国气象局东北地区生态气象创新开放实验室)
Study on threshold of lower limit temperature index for maize sowing in Heilongjiang Province
yanping1, wangping1, jishengtai2, zhuhaixia1, jianglixia1
(1.Heilongjiang Province Institute of Meteorological Sciences;2.Heilongjiang Ecometeorological Center)
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投稿时间:2019-03-29    修订日期:2020-04-14
中文摘要: 黑龙江省受热量资源限制,玉米播种需要抢前抓早,研究黑龙江省玉米大田播种最低温度界限指标以期指导玉米科学早播,减少损失。利用1981—2005年黑龙江省13个玉米观测站资料,采用聚类分析及典型年分析法,研究玉米播种下限温度指标,并用2006-2018年观测数据及大田分期播种试验对指标进行验证。研究表明,地温是玉米大田播种的主要影响因子,日10cm地温可以作为最低温度界限指标的指示值。日10cm地温6.0℃为玉米不能播种的最低界限指标;日10cm地温6.0-8.0℃为玉米可以播种的最低界限指标,少数玉米遭受低温灾害;日10cm地温8.0℃为玉米安全播种的最低界限指标。
Abstract:Due to the limitation of heat resources in Heilongjiang Province, maize sowing needed to be done early. In order to guide scientific maize sowing early and decrease losses, this paper studied the lowest temperature limit index of maize sowing in Heilongjiang Province. Based on the observation data from maize field observation stations from 1981 to 2005 in Heilongjiang province, By using of cluster analysis and typical year analysis method, the lowest temperature limit index of maize field sowing was studied, At the same time, the index was verified by the observation data during 2006 to 2018 and the experiment data form the field sowing by stage. The results showed that the ground temperature was the main factor affecting the maize sowing, and the daily ground temperature (10 cm) could be used as an indicator of the minimum temperature limit. The lowest threshold temperature index of the daily ground temperature (10 cm) was 6.0℃ which the maize couldn’t be sown. The lowest threshold temperature index of the daily ground temperature (10 cm) was from 6.0℃ to 8.0℃ which the maize could be sowed, but a few maize suffered from low temperature disasters. The lowest threshold temperature index of the daily ground temperature (10 cm) was from 8.0℃ which the maize could be sown safely.
文章编号:201903290127     中图分类号:    文献标志码:
基金项目:中国气象局沈阳大气环境研究所开放基金项目(2019SYIAE04)、科技部粮丰工程专项(2018YFD0300103-1)、中国气象局东北地区生态气象创新开放实验室基金项目(stqx2019zd01)、(stqx201803)和(stqx201705)共同资助。
引用文本:
闫平,王萍,季生太,朱海霞,姜丽霞,0.[en_title][J].Meteor Mon,():-.
yanping,wangping,jishengtai,zhuhaixia,jianglixia,0.Study on threshold of lower limit temperature index for maize sowing in Heilongjiang Province[J].Meteor Mon,():-.