山西昔阳县金皇后的播种面积逐年扩大,因金皇后生育日数长,所以在春季需要适当提早播种。但由于晚霜和低温的袭击,常使刚出土的玉米幼苗受冻,或者因低温影响了生长发育,造成缺苗减产,特别是在背坡地上(该县是山区,坡地很多),更为严重。该县农场发现农民有施保温粪促使小苗生长的 Shanxi Xiyang County Queen’s sown area has expanded each year, due to the Golden Queen days of birth, so in the spring need to be sown early. However, due to late frost and low temperature attacks, freshly excised maize seedlings are often frozen, or their growth and development are affected by low temperatures, resulting in a shortage of seedlings. This is especially true on the slopes of the slopes . The county farms found that farmers have to insure the warm manure to promote seedling growth