一“冬发”的概念及其增产作用农谚说:“油菜要丰收,全靠年前发好蔸”。这“发蔸”就是冬发,有的地方叫“发棵”。在生产上油菜冬季生长状况有“冬发”、“冬壮”和“冬养”几种类型。所谓“冬养”,指油菜苗年前有绿叶5—6片,苗架如饭碗般大小,这是亩产100多斤的冬苗标准;所谓“冬壮”,油菜苗年前有7—8片绿叶,苗架长得象菜碗,这是亩产200多斤的冬苗标准;所谓“冬发”,油菜苗株年前有9—10片 A “winter hair” concept and its role in increasing production Agricultural proverb said: “Rape to harvest, all relying on the year before made a good boil.” This “fat hair” is the winter hair, some places called “hair”. In the production of rape in winter growing conditions are “winter hair”, “winter strong” and “winter raise” several types. The so-called “winter rearing” means that there are 5-6 green leaves before the year of rape. The size of a seedling is like the size of a rice bowl. This is the winter seedling standard of 100 kilos per mu. The so-called “winter strong” 8 green leaves, seedlings look like dishes, which is 200 kilos per mu of winter seedlings standard; the so-called “winter hair”, rape seedlings year ago, there are 9-10