气象因素对崇明西部地区小麦生长发育影响的初步研究

Preliminary study on the influence of recent years meteorological factors on growth and development of wheat in the west of Chongming

通过对崇明西部跃进气象哨2001-2007年主要气象资料的分析,发现主要气象因子(光照、降雨量、积温等)对小麦生长发育影响显著。崇明西部地区12月下半月是有效分蘖发生的决定期,此期的光照对成穗率和最终穗数影响较大;12月上半月的降雨量对成穗率和最终穗数有显著影响;11月下半月的积温高低对大分蘖的数量有较大影响,1月上半月是分蘖成穗与否的分界期,此期的积温高低决定分蘖的有用与否。

The recent 6-year meteorological data from the Yuejin Meteorological Post at the west of Chongming were analyzed and it was found that the main meteorological factors such as sunshine, rainfall and accumulated temperature have significant effects on the growth and development of wheat. In the west of Chongming,the second half of December is the critical stage of producing effective tiller of wheat,at which sunshine greatly affects the percentage of ear-bearing tiller and the final ear number. The rainfall in the first half of December has a significant effect on the percentage of earbearing tiller and the final ear number. The accumulated temperature in the second half of November greatly affects the number of big tillers, and the accumulated temperature in first half of January decides whether the tillers are available.