川东南小麦低产气象成因及改造对策

The Meteorological Causes of Low—yield Wheat in Southeast Sichuan and Countermeasures

本文从分析川东南小麦产量形成与气候生态条件的关系入手,对川东南小麦低产的气象成因进行了研究。结果表明,小麦生育前期和后期的湿害、中期的干旱、整个小麦生育期间的光照不足是川东南小麦低产的主要气象原因,少数年份中期的低温、冻害和后期高温对小麦产量也有一定影响。据此,提出了与气候特点相适应的改造对策.

By analysing of correlationship besween wheat yield and ecoclimatic condi- tions,meteorological causes of low-yield wheat is studied.It is shown that wet damage in earlier and later stage,drough in middle stage of wheat growing pe- riod,and illumination shortage through the wheat growing period are major meteorological reasons for low yield of wheat in southeast Sichuan.In addition, freezing damage and megatherm period in a few years have certain influence on wheat production.Countermeasures aimed at the climatic features of southeast Sichuan are presented according to the results.