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玉米是世界上种植最广泛的谷类作物之一,也是目前单产和总产量最高、影响最大的谷类作物,是我国第二大农作物,2008年种植面积0.3亿hm2,产量1.5亿t[1-2]。四川省是我国重要玉米产区,常年种植玉米120万hm2,占西南地区1/4以春播玉米为主,有少量夏播玉米和秋播玉米。四川省气候
Corn is one of the most widely grown cereal crops in the world. It is also the cereal crop with the highest yield and highest output at present. It is the second largest crop in China with a planting area of 0.3 billion hm2 and a production of 150 million t [1-2 ]. Sichuan Province is an important maize producing area in China. There are 1.2 million hm2 of maize planted throughout the year, accounting for 1/4 of spring maize sowing in southwest China. There are a few summer sowing maize and autumn sowing maize. Sichuan climate