小麦从播种出苗到越冬开始(日平均气温降到2℃以下)叫冬前期。适期播种的冬小麦一般要经历50～60天的冬前期。这一时期管理目标是:确保全苗、促根增蘖、培育壮苗,为小麦安全越冬奠定基础。主要管理技术如下:一、查苗补种小麦出苗后要及时查苗,对缺苗断垄的麦田要及早补种,坚决 Wheat from sowing to sowing overwintering (average daily temperature dropped below 2 ℃) is called the winter pre-winter. Winter wheat sowing season generally go through 50 to 60 days of pre-winter. Management objectives during this period are: to ensure that the whole plant, to promote tillering, nurturing strong seedlings, laid the foundation for the safe winter wheat. The main management techniques are as follows: First, check the seedling replanting wheat should be promptly check the emergence of seedlings, the lack of seedlings off the ridge to wheat replant, determined