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(一)肥水管理:(1)生长期:定植后要经常浇水,严防地表干旱。10天后,长出新叶时停止浇水,进行中耕松土,待2—3天后,再浇水。以后4—5天内不浇水,进行蹲苗,促其发根。当株高20cm左右时,随浇水每亩施碳酸氢铵20千克。(2)生长中期:植株封行以后,由于土壤湿润,大量白根会长出地表,这意味着生长旺期已经到来。此时要肥水齐攻,7—10天追肥一次,(每亩追碳酸氢铵25—30千克,确保生长期内不脱肥。
(A) fertilizer and water management: (1) growing season: watering often after planting, to prevent surface drought. After 10 days, grow new leaves to stop watering, cultivating loose soil, to be 2-3 days later, and then watering. 4-5 days after the watering is not carried out Dunmiao, promote hair roots. When the plant height of about 20cm, with the water per acre ammonium bicarbonate 20 kg. (2) Mid-growth stage: After the plants are sealed off, a large number of white roots grow out of the surface due to soil moisture, which means the growing season has come. Fat water at this time attack together, top dressing 7-10 days, (25-30 kilograms per acre to pursue ammonium bicarbonate, to ensure that the growth period does not take off.