农谚云:“壮苗三分收,瘦苗一半丢。”这充分说明培育油菜壮苗的重要性。水田三熟制油菜,由于季节迟,土质差,菜苗不仅要壮,而且要大,这样才能夺得丰收。三熟油菜一般年前生长很差,年后产量不高,有的早春翻耕,不能保种保收,严重影响总产和单产的提高。近些年来,我所在总结群众经验的基础上,对三熟油菜大壮苗移栽进行了较系统的研究。结果表明,三熟油菜培育大壮苗移栽是夺取高产的一项关键技术。大壮苗的标准及其增产作用我们所说的大壮苗,是与一定的栽培技术和产量要求相统一的。过去说,“矮脚四叶齐,百斤不稀 Agricultural proverb goes: “Strong seedlings third income, lost half of lean seedlings.” This fully illustrates the importance of nurturing strong seedlings of rapeseed. Paddy three ripe rapeseed, because the season is late, poor soil quality, seedlings not only strong, but also large, so as to win the harvest. Three years ago, rapeseed is generally poor growth, production is not high after the year, and some plow in early spring, can not be preserved, seriously affecting the increase of total output and yield. In recent years, on the basis of summarizing the masses’ experiences, we conducted a systematic study on the transplanting of big strong seedling of the three ripe rape. The results showed that the cultivation of three strong rape seedlings seedlings transplanting is a key technology to capture high yield. Big seedling standard and its role in increasing production We say big strong seedlings, with a certain amount of cultivation techniques and yield requirements of unity. In the past said, "four feet of dwarf feet, never be afraid