Impact of water and temperature on spring maize emergence speed and emergence rate
2012; Elsevier BV; Volume: 32; Issue: 11 Linguagem: Inglês
10.5846/stxb201105050585
ISSN1000-0933
Autores马树庆 MA Shuqing, 王琪 Wang Qi, 吕厚荃 LV Houquan, 徐丽萍 XU Liping, Hai Yu, 张铁林 Zhang Tielin,
Tópico(s)Greenhouse Technology and Climate Control
ResumoPDF HTML阅读 XML下载 导出引用 引用提醒 水分和温度对春玉米出苗速度和出苗率的影响 DOI: 10.5846/stxb201105050585 作者: 作者单位: 吉林省气象台,长春,吉林省气象研究所,长春,国家气象中心,北京,榆树市农业气象试验站,榆树,榆树市农业气象试验站,榆树,榆树市农业气象试验站,榆树 作者简介: 通讯作者: 中图分类号: 基金项目: 国家行业专项资助(GYHY200906021) Impact of water and temperature on spring maize emergence speed and emergence rate Author: Affiliation: Meteorological Observatory of Jilin Province,Meteorological institute of Jilin Province,National Meteorological center,Agrometeorological Observatory of Yushu County of Jilin Province,Agrometeorological Observatory of Yushu County of Jilin Province,Agrometeorological Observatory of Yushu County of Jilin Province Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:在东北地区中部开展春玉米春季水分胁迫和分期播种试验。试验在人工防雨棚内进行,设4个水分处理和3个播种期处理。结果表明,春玉米(Zea mays)播种出苗期间土壤含水量与出苗期和出苗率的关系均呈显著的二次函数关系。在田间持水量以下,耕层土壤湿度越大,玉米出苗越快,出苗率越高;干旱推迟出苗期,降低出苗率。气温低出苗慢,但温度对出苗率无明显影响。播种出苗期间0-20 cm深平均土壤湿度(S)、土壤有效水量(H)和平均气温(T)对出苗速度的组合影响指标是:25%>S>21%(或70 mm>H>45 mm)、T>18 ℃ 玉米出苗快;21%>S>18%(或45 mm>H>35 mm)、18 ℃>T>16.5 ℃ 玉米出苗比较快;18%>S>16%(或35 mm>H>25 mm)、16.5 ℃>T>15.5 ℃玉米出苗较慢;S<16%(或H<25)、T 50 mm)出苗率最高(95%以上);相对湿度80%左右(或50>H>40 mm)出苗率较高(90% 左右);相对湿度70%以下(或H<40 mm)出苗率明显降低, 60%以下(或H S>21%, 70 mm>H>45 mm and T>18 ℃; it would emerge normally when 21%>S>18%, 45 mm>H> 35 mm and 18 ℃>T>16.5 ℃; and it would emerge slowly when 18%>S>16%, 35 mm>H> 25 mm and 16.5 ℃>T>15.5 ℃; and the emergence was postponed remarkably when S<16%, H<25 mm and T 85% and H>50mm; the higher one (about 90%) when relative humidity was about 80% and 50 mm>H>40 mm; and the lower one when relative humidity was less than 70% and 50 mm>H>40 mm; and the one was less than 65% when relative humidity was less than 60% and H<30 mm, and the serious drought happened. 参考文献 相似文献 引证文献
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