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河北康保县农户,试着在冬初播种向日葵经过对比观察,冬播的比顶凌春播的早出苗7天,苗齐苗壮,极耐早春的霜冻,产最约提高10%。冬播的最佳时间是土壤时冻时消时进行,株行距一般为0.5×0.5米左右,坑深约6厘米,每坑撒干籽5粒,然后覆土3厘米左右,并稍加压实,使其形成深3厘米的小园坊,增加幼苗的抗风、抗霜能力。葵花冬播效果好的原因,一是种皮早开裂,发芽快;二是有利于保墒,这在春旱严重的地方,是十分有利的。
Hebei Kabu County farmers try to sow sunflowers in the early winter after a comparative observation, winter planting than the top Lingling sowing early seedlings seven days, Miao Qi Miao Zhuang, very resistant to early spring frost, the most productive increase of 10%. Winter sowing the best time is when the soil when the cold when the consumer, the line spacing is generally about 0.5 × 0.5 meters, pit depth of about 6 cm, each pit sprinkled dried seeds 5, and then soil about 3 cm, and a little compaction , Making it a small garden 3 cm deep, increasing seedling wind, frost resistance. Sunflower winter planting good reasons, first seed coat early cracking, germination fast; second is conducive to soil moisture, which in severe spring drought, is very favorable.