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2月天气渐暖,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。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。微量元素缺乏直接导致大蒜植株不健壮,发育不良。严重的可使真菌、细菌侵入产生多种病害,导致减产,甚至绝收。此期的管理需要加强肥水管理和病虫害防治,以保证蒜
In February the weather gets warmer, the seedlings turn green, the lower part begins to grow adventitious roots, garlic sprouts and garlic heads begin to differentiate. At this time, the vigorous growth of seedlings is guaranteed. The accumulation of nutrients for garlic sprouts and garlic heads is the key to high quality and high yield of garlic. Continuous planting of garlic in the main producing areas makes the soil trace elements (iron, copper, manganese, zinc, magnesium, molybdenum, boron, cobalt, etc.) and the relative lack of calcium. The lack of trace elements directly lead to garlic plants are not robust, dysplasia. Serious can make fungi, bacteria invade a variety of diseases, resulting in reduced production, or even absolute. This period of management needs to strengthen fertilizer and water management and pest control to ensure garlic