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一、选良种、育壮苗。选择早熟、丰产、抗病、适宜密植品种,元月初阳畦育苗播种。播前3～4天进行浸种催芽,待种子露出白尖后即可播种,播种应选择无风晴天的中午进行。2月初开始分苗,苗距8.5厘米左右为宜。 二、适时早栽、提前扣棚。定植前7～10天扣棚,3月中旬栽植,定植时带土坨灌足缓苗水。定植密度因品种而异。 三、加强管理。对徒长苗定植后当天下午进行短时通风排湿,并及时中耕,提高地温,促进根系发育。对老化苗要晚通风,提高棚内
First, choose a good species, nurturing seedlings. Choose precocious, high yield, disease resistance, suitable for close planting varieties, early January sunflower nursery sowing. 3 to 4 days before sowing seed germination, to be white seed after the seed can be sown, sowing should be no wind and sunny noon. Beginning of February seedlings, seedling spacing of 8.5 cm is appropriate. Second, timely early planted in advance deduction shed. 7 to 10 days before planting buckle shed, planted in mid-March, colonization with soil lump filling Huanmiao water. Planting density varies by breed. Third, strengthen management. Appropriate long-handled seedlings after planting the afternoon of the afternoon ventilation and dehumidification, and timely cultivation, increase ground temperature and promote root development. Aging seedlings to be late ventilation to improve shed