2024年7月18日 星期一 19:43:55

土豆催芽 早熟增产

    土豆播前催芽可促使其播后早出苗,出苗整齐,生长一致,早结薯,早成熟,获得高产。春土豆催芽播种比不催芽播种可增产10%以上。
  药剂拌种 用70%的甲基托布津2公斤加72%的农用链霉素1公斤均匀拌入滑石粉50公斤制成混合粉剂,每50公斤种薯用2公斤混合粉剂拌匀,以防止种薯腐烂。
  催芽方法 温暖的室内或大棚温度控制在18℃~20℃,铺一层10厘米厚的湿润沙土或疏松细土,将种薯放在沙土或细土上,覆盖5厘米左右厚的过筛沙土或细土,用水壶喷水保持湿润(以手握刚成团为宜),温度低于18℃时,上面再覆盖稻草、麦秸、草苫等保温催芽。在催芽过程中,要用水壶喷水保湿。待种薯幼芽长出5毫米左右,揭去覆盖物,降温至12℃~15℃,并逐渐暴露在散射光下壮芽。种薯以堆放1~2层为宜。每天要小心轻翻,使发芽均匀粗壮,避免下层薯块芽太长。若种薯在贮藏过程中已发芽,应将种薯放在散射光下壮芽。待芽长至1厘米左右即可用于切块或播种。
  注意事项 不能将种薯直接放在太阳光下直射,小心处理种薯,轻拿轻放,防止断芽,种薯应放在通风良好的地方,同时要避免雨淋和霜冻。

 

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