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我县地形比较复杂,气候资源具有显著的地域差异,加之近年来世界气候异常现象频率出现,更加重了我县旱、涝、风、雹、冷害等恶劣天气和病虫灾害的发生,给我县农业生产带来了很大威胁。趋利避害我县无霜期仅有135～140天,目前生产上推广的“丹玉六”’、“中单二”玉米和“锦杂75”高粱多为中晚熟杂交种,生育期都是135天左右。多年的实践告诉我们,5月份干旱,4月中下旬土潮地暖,易抓全苗。依据这个特点,我们提出了适期早播的措施,并在生产中不断总结完善缩短
My county topography is more complex, climate resources have significant geographical differences, combined with the recent world frequency of anomalies in the world, but also to increase the county drought, waterlogging, wind, hail, chill and other adverse weather and pests and disasters, give me County agricultural production has brought a great threat. Advantages and avoidance My county frost-free period of only 135 to 140 days, the current production of the promotion of “Dan Yu Liu”, “in the single two” corn and “Jin 75” sorghum mostly late hybrids, the growth period is About 135 days. Years of practice tells us that the drought in May, mid-to-late April tide warm, easy to grasp the whole seedlings. According to this feature, we put forward the measure of early sowing period, and in the production of continuous improvement and shorten