油菜秋发栽培的防冻技术一、加强肥水管理。一是早施苗肥 ,巧施腊肥。苗肥不宜推迟使用 ,防止因菜苗生长旺又嫩而造成冻害。冬至后要及时施 1次腊肥 ,提高土温 ,减轻冻害。一般应以有机肥为主 ,如草木灰、半腐熟的猪牛粪等 ,均匀撒施在油菜植株间 ,可填塞土缝 ,壅根保温 ,提高 Rape autumn cultivation of antifreeze technology First, to strengthen fertilizer and water management. First, early application of Miao, Qiao Shi Lan fat. Miao fertilizer should not be postponed to prevent frying damage caused by the growth of vegetables and vegetables. After the winter solstice Shi Shi Shi Shi wax, improve soil temperature, reduce frost damage. Generally should be based on organic fertilizer, such as grass ash, semi-matured pig manure, evenly sprinkled in the rapeseed plant, can be filled soil seams, Eupatorium insulation, improve