一、返青期的管理2月下旬,天气渐暖,幼苗返青,下部开始生长不定根,蒜薹、蒜头开始分化,这时保证幼苗健壮生长,为蒜薹、蒜头的分化多积累营养物质,是夺取大蒜优质高产的关键。根据全省第二次土壤普查结果:我省大蒜主产区的连年重茬种植使土壤中微量元素(铁、铜、锰、锌、镁、钼、硼、钴等)和钙相对缺乏。微量元 First, the greening management In late February, the weather getting warmer, seedlings turn green, the lower part of adventitious roots, garlic sprouts, garlic began to differentiate, then ensure the robust growth of seedlings for the garlic sprouts, garlic, the accumulation of more nutrients, is to seize the garlic quality The key to high yield. According to the result of the second soil survey in the province, the continuous planting of garlic in the main producing areas of our province made the trace elements (iron, copper, manganese, zinc, magnesium, molybdenum, boron, cobalt, etc.) and calcium in the soil relatively deficient. Trace elements