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1 特早50天1.1 培育壮苗浙江省可在6月下旬至7月上旬播种育苗,7月下旬至8月上旬定植,苗龄25～30d,4片真叶即可定植。播种时要稀播、匀播。为提高成苗率应采用塑料薄膜避雨,烈日下采用遮阳网育苗,及时浇水、治虫、间苗、追肥、促进幼苗健壮。1.2 合理密植采用深沟高畦,畦(连沟)宽1.3m,畦面宽90cm,沟深30cm。株距45～50cm,每667m~2栽2 000～2 200株。1.3 科学肥水管理
1 special early 50 days 1.1 to cultivate strong seedlings Zhejiang Province in late June to early July sow seedlings planted in late July to early August early planting age 25 ~ 30d, 4 true leaves can be planted. Seeding should be sowing, evenly sowing. To improve the rate of seedlings should be used plastic film to avoid the rain, the sun under the shade net nursery, timely watering, pest control, Miao, topdressing and promote seedling robust. 1.2 Reasonable close planting with deep ditch Gao 畦, 畦 (even ditch) wide 1.3m, 畦 wide surface 90cm, ditch deep 30cm. Plant spacing 45 ~ 50cm, every 667m ~ 2 planted 2 000 ~ 2 200 strains. 1.3 scientific fertilizer and water management