种肥常用于拌种或移栽时局部施于种子及幼苗附近，它可补充基肥的不足，供应作物初期的养分。但有些化肥对种子或幼苗有毒害作用，不宜作种肥。1、对种子成幼苗有腐油作用的肥料主要是碳酸氢钦和过磷酸钙，前者是有腐蚀性和挥发性，后者含有游离态的硫酸和磷酸，有强烈的腐蚀作 Fertilizer commonly used for seed dressing or transplanting locally applied to the seeds and seedlings in the vicinity, it can supplement the lack of base fertilizer, the supply of nutrients for the early crop. However, some fertilizers have toxic effects on seeds or seedlings and should not be used as seed fertilizers. 1, the seeds of seedlings have rotten oil fertilizer is mainly bicarbonate bicarbonate and superphosphate, the former is corrosive and volatile, the latter containing free sulfuric acid and phosphoric acid, a strong corrosion for