| 刘卫民,蒲金涌,姚晓红,袁伯顺.天水旱作区土壤水分变化规律及其与冬小麦产量关系研究[J].干旱地区农业研究,2008,(3):29~32 |
| 天水旱作区土壤水分变化规律及其与冬小麦产量关系研究 |
| A studying on variation law of soil moisture and relationship between soil moisture and output of wheat at Tianshui Gansu in arid region |
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| DOI：10.7606/j.issn.1000-7601.2008.03.05 |
| 中文关键词: 土壤水分 变化 冬小麦 产量 天水 |
| 英文关键词:soil moisture variation wheat yield Tianshui |
| 基金项目:科技部科研院所社会公益研究项目“中国干旱气象灾害监测预警方法研究”(2004DIB5J192)； “西北农作物对气候变化的响应及其评价方法”(2005DIB3J100) |
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| 中文摘要: |
| 运用天水农业气象基本观测站试验田土壤湿度资料(1980~2005年)及冬小麦产量资料,分析了该地0~100 cm土壤水分运行、变化规律及土壤水分变化对冬小麦产量的影响,分时段对其影响程度进行了定量评述。结果显示:土壤贮水量的年变化呈二次曲线,贮水量最低值出现在6月中旬;累计耗水量的年际变化呈logister曲线;贮水量与冬小麦产量相关最显著的时段在起身到孕穗阶段,4~5月0~100 cm土壤含水量每增加10 mm,产量增加180 kg/hm2 |
| 英文摘要: |
| Based on the data of wheat yield and soil moisture which were measured in the test field of the Agrometeorological Experiment Station of Tianshui （1980～2005）?the laws of soil water movement and it’s variation and the effects on the output of wheat were analyzed and the quantity commentary of impact of soil water on the yield of wheat was made in different periods．The results showed that soil water content appeared to be parabole and it’s minimum value appeared in the middle ten days of June?accumulated consumption water turned to be Logsiter curve?the yield of wheat was seriously influenced by soil water content during the growth periods from the beginning of growing stage to spike formation stage．It also showed that soil water （0～100 cm） increased by10mm with the yield of wheat increasing by180kg／hm2 in April to May． |
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