| 辽西地区玉米生长速率及产量对光热条件变化的响应 |
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| 引用本文： | 尹洪涛,张国林.辽西地区玉米生长速率及产量对光热条件变化的响应[J].中国农学通报,2015,31(18):146-151. |
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| 作者姓名： | 尹洪涛 张国林 |
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| 作者单位： | (辽宁省朝阳市气象局,辽宁朝阳 122000） |
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| 基金项目： | 基金项目：科技部农业科技成果转化资金项目“农田土壤含水量监测预报技术推广应用”(05ESN217400412)；辽宁省科技厅农业攻关项目“主要农业气象灾害发生规律及预警和评估机制研究”(2011210002)。 |
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| 摘 要： | 为了保障粮食生产安全合理安排农业生产，探讨辽宁西部地区玉米生产中的农业气象问题，通过玉米分期播种试验，运用数理统计和气候诊断分析方法，分析气候变化对玉米出苗速度、营养生长、生殖生长发育速度和产量的影响。结果表明：气候变化对玉米生长发育和产量的影响十分显著，在水分基本满足的条件下，气候变暖气温升高、积温增加，玉米播种至出苗阶段生长速度加快，出苗至抽雄、抽雄至成熟阶段生长速度减慢，日照时间增加可延长玉米生育期。≥10℃积温每增加（减少）100℃·d，产量每公顷增产（减产）约455 kg。在气候变暖环境下，延长生育期可提高单产，应考虑引用偏晚熟玉米品种，增加喜温作物比例。辽西地区最佳播种期在4月20—30日之间。研究成果可为农业结构调整、提高玉米产量提供依据。
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| 关 键 词： | 大型渠道 大型渠道 弹性变形 塑性变形 设计水位 |
| 收稿时间： | 2015/1/20 0:00:00 |
| 修稿时间： | 2/4/2015 12:00:00 AM |
Response of Corn Growth Rate and Yield in Western Liaoning to the Change of Solar-thermal Conditions |
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| Yin Hongtao and Zhang Guolin.Response of Corn Growth Rate and Yield in Western Liaoning to the Change of Solar-thermal Conditions[J].Chinese Agricultural Science Bulletin,2015,31(18):146-151. |
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| Authors: | Yin Hongtao and Zhang Guolin |
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| Institution: | (Meteorological Bureau of Chaoyang City, Chaoyang Liaoning 122000) |
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| Abstract: | In order to ensure the food production security and reasonable arrangement of the agricultural production, this essay explored the agricultural meteorological problems in corn production in Western Liaoning, and through the experiments of sowing corns by stages, as well as with the analysis methods of mathematical statistics and climate diagnosis, this essay analyzed the effects of the climate changing on corn emergence rate, vegetative growth, reproductive growth speed and yield. The results indicated that the effect of the climate changing on the growth and yield of corn was significant. Under the condition of enough moisture, the climate warms up and the temperature accumulates, and the corns grow faster from the stage of sowing to emerging, and the growth would slow down from the stage of emerging to tasseling, and from tasseling to mature. To increase the sunshine time can prolong the corns' growth period. For every 100℃·d increase (decrease) of the ≥10℃accumulated temperature, the yield per hectare increases (decreases) about 455 kg. In the environment of climate warming, to prolong the growth period can enhance the yield, so the late-maturing corn varieties should be considered to increase the proportion of the thermophilic crops. The best sowing time is from April 20 to 30 in the Western Liaoning. The research result can provide basis for the adjustment of the agricultural structure, as well as increasing in the corn yield.Key words: corns; sowing by stages; climate changing; growth speed; yield; Western Liaoning |
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| Keywords: | Corns Sowing by stages Climate changing Growth speed Yield West Liaoning District |
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