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我省地处亚热带和热带北缘,是一个自然条件复杂的高原山区省份。全省温暖多雨,年雨量1100mm,但降雨分布不均,存在明显的干湿季,全年降雨多集中于夏秋季,5～8月降雨占全年雨量的85％。这种特定的气候条件,给我省旱粮生产带来了十分严重的旱情威胁,大春玉米常常因冬春干旱延误播期,苗期因间歇性干旱死苗严重。玉米产量低而不稳。小春小麦因进入旱季,又缺乏灌溉条件,出苗困难,产量也极低。
Located in the subtropical and tropical northern margin of our province, it is a mountainous plateau province with complicated natural conditions. The province is warm and rainy, annual rainfall 1100mm, but the uneven distribution of rainfall, there is a clear dry season, rainfall throughout the year concentrated in the summer and autumn, May to August rainfall accounted for 85% of the annual rainfall. This particular climatic conditions have posed a very serious drought threat to the production of dry food in our province. Spring maize often sows with delays due to winter and spring droughts, and seedlings are severely dead due to intermittent droughts. Corn production is low and unstable. Spring wheat due to enter the dry season, but also the lack of irrigation conditions, emergence difficulties, yield is also very low.