| 李玮,陈根发,刘家宏,卢路,秦大庸.黑龙港地区夏玉米生长期综合ET试验研究[J].干旱地区农业研究,2011,29(5):128~132 |
| 黑龙港地区夏玉米生长期综合ET试验研究 |
| Research on integrated evapotranspiration of maize in Heilonggang plain |
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| DOI：10.7606/j.issn.1000-7601.2011.05.23 |
| 中文关键词: 夏玉米 土壤含水率 蒸散发 黑龙港 |
| 英文关键词:maize soil moisture content evapotranspiration Heilonggang |
| 基金项目:国家自然科学基金创新群体研究基金(51021006)；国家重点基础研究发展计划(2006CB403401)；国家自然科学重点基金（40830637)；国家“十一五”科技支撑项目（2006BAB04A16） |
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| 中文摘要: |
| 为了研究人类活动影响下流域二元水循环中农作物耗水通量特征，在华北平原黑龙港地区夏玉米生长期内，使用FDR与中子仪对土壤表层和剖面含水率分别进行了田间测量，对玉米的不同生长阶段特性、生长期内降雨以及土壤含水率的变化进行了分析。并以此为基础，对玉米苗期，拔节，抽雄，灌浆等各生长阶段利用水量平衡法进行了蒸散发量（ET）计算和分析。结果表明：玉米生长期内的总蒸散发为383.0 mm
，各生长阶段日均ET分别为1.2，3.6，5.7，6.5，2.8，1.8 mm/d。ET在不同生长时期与叶面积指数成明显的线形相关关系，最高叶面积指数为5.693，玉米生长期内平均蒸散系数为0.62。该结果可为研究强人类活动下的“二元”水循环过程的蒸发通量提供依据。 |
| 英文摘要: |
| For making the flux of dualistic water cycle affected by human activities clearly, soil moisture content of surface and profile were measured separately by FDR and the neutron probe in Heilonggang area of Hebei Plain during the growth period of maize. The growth characteristics of maize an
d the correlation analysis between precipitation and soil moisture content were analyzed. Based on this, the evapotranspiration (ET) was calculated and analyzed in the stages of maize seedling, jointing, tasselling, grouting and so on. The results show that the total evapotranspiration is 383.0 mm during the maize growth period and the average ET is 1.2, 3.6, 5.7, 6.5, 2.8, 1.8 mm/d respectively. ET is highly related with the leaf area index (LAI) during various growing periods. The highest LAI is 5.693 and the average ET and precipitation rate is 0.62. This research is part of the study of duality water cycle under intense human activity. |
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