油菜冬季管理的主要目的是达到“冬壮不旺,安全越冬”,为来年“春发”奠定基础。为此,应采取以下措施: 1、及时间苗、定苗:适时间苗、定苗可以避免互相遮荫、争光、争肥、争水,形成高脚苗弊端,是培育壮苗的一项重要措施。在3—4叶期一次定苗,留苗距1—2寸,选留健苗、壮羁、大苗。对缺苗的,要结合间、定苗进行补栽。水浇地亩留苗1.2万株,旱肥地1.3万株,旱薄地1万株。 2、追壮根保暖肥:油菜进入五叶期后,根据土壤肥 The main purpose of winter rapeseed management is to achieve the goal of “winter is strong and winter is safe”, laying the foundation for the coming spring. To this end, we should take the following measures: 1, and time Miao, Ding Miao: Time Miao, Ding Miao can avoid mutual shade, glory, fight fat, water dispute, the formation of tall and weak defects, is an important measure to nurture seedlings . In 3-4 leaf stage Dingmiao, stay seedling distance 1-2 inches, choose to stay healthy seedlings, Zhuang strong custody, big seedlings. The lack of seedlings, to be combined with Ding Miao for replanting. Irrigating acres of Miao Miao 12,000, 13,000 dry fertilizer to dry, drought 10,000 to 10,000. 2, HuntKey root warm fertilizer: Rape into the five-leaf stage, according to soil fertility