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玉米是中国的重要粮食作物,也是不可替代的重要饲料原料和工业原料,市场需求量巨大。西南地区是中国第三大玉米主产区,受非生物逆境如干旱、高温、低温、荫湿等胁迫十分频繁,严重影响玉米生产发展,造成玉米单产低而不稳,严重制约西南地区玉米生产发展。该文初步介绍了西南玉米主要非生物气候逆境概况,以及育种实践中玉米抗逆品种选育方向和对策,以期为培育高产抗逆新品种,提高西南地区玉米抗逆育种水平提供参考。
Corn is an important food crop in China and is also an irreplaceable important feed raw material and industrial raw material with huge market demand. Southwest China is the third largest maize producing area. Due to the abiotic stresses such as drought, high temperature, low temperature, humidity and so on, it is very frequent that serious impact on maize production and development leads to low and unstable maize yield and severely restricts corn production in Southwest China development of. This paper introduced the general situation of main abiotic climate adversities in Southwest corn and the breeding direction and countermeasures of corn resistant varieties in breeding practice so as to provide reference for cultivating new varieties with high yield and stress resistance and improving the antibreeding ability of maize in Southwest China.