摘要
根据冬小麦生长发育的农业气象指标,利用对比分析的方法得出2014年驿城区冬小麦高产的有利气象条件。播种—出苗阶段,底墒水充足,小麦出苗率高,生长整齐;返青提前,使返青期长,穗分化时间加长,可能造成小麦小穗数增加,穗粒数增多;拔节—抽穗期,虽然降水比常年偏少,但能够基本满足小麦开花灌浆对水分的需求;适宜的温度,充足的降水和日照条件,对小麦的抽穗、灌浆非常有利,也是小麦增产的主要原因。
According to the agricul- tural meteorological index of the growth and development of winter wheat, the favorable meteorological factors which impacted the yield of winter wheat in Yicheng District in 2014 were concluded by the method of comparative analysis. The soil water was adequate during the sowing and seedling emergence stage, the rate and evenness of emergence were high. With advancing the returning green of winter wheat, the returning green period and the spike differentiation period were lengthened, which could increase the number of spikelets per spike and grains per spike.Although the precipitation was less than normal during the jointing and heading stage, it could meet to fundamental need of water for wheat flowering and grouting. Appropriate temperature, abundant precipitation and sunshine were very good for the heading and grouting of wheat, which were also the main reasons for yield-increasing of winter wheat.
出处
《农业灾害研究》
2014年第8期42-43,共2页
Journal of Agricultural Catastrophology
关键词
气象条件
冬小麦
生长发育
Meteorological condition
Winter wheat
Growth and development
