适时种好小麦,是争取小麦苗全、苗齐、苗匀、苗壮,搭好高产架子的关键措施,应抓好以下几个环节:一、创造适宜土壤墒情小麦发芽期间的土壤含水量,一般应保持在17—19%(占田间最大持水量的70—80%)。在此水分范围内播种,小麦出苗快,出苗齐,出苗率高。当土壤含水量低于12%时,由于种子吸水不足,出苗晚,出苗不整齐,苗子弱,出苗率也明显降低;土壤过湿,影响了土壤的透气性,种子得不到充足的空气,也不能很好出苗,甚至造成烂种。因 The timely planting of wheat is the key measure to win the wheat seedling, seedling Qi, seedling, seedling strength, high yield shelves, should grasp the following aspects: First, to create suitable soil moisture Wheat germination during the soil moisture content, Generally should be maintained at 17-19% (accounting for 70-80% of the maximum water holding capacity). In this moisture range of sowing, wheat emergence fast, emergence Qi, the emergence rate is high. When the soil moisture content is less than 12%, the seeds are not absorbed enough water, the seedling is late, the emergence is irregular, the seedlings are weak and the emergence rate is also obviously reduced; the soil is too wet, affecting the permeability of the soil, Can not be very good sprout, or even cause rotten species. because