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播种时施在种子旁的肥料或用一定浓度的溶液拌种的肥料统称为种肥。种肥的作用主要是供给作物苗期营养,促进苗期生长;有的种肥还具有改善种子床的理化性状和微生物活动的作用,如提高地温、防止水分蒸发、改变土壤的酸碱反应。做种肥的肥料要求易溶解、速效性,施用效果好,如有机肥料的人粪尿(拌土)、畜粪尿、豆饼渣、麻子饼等,化学肥料中的微量元素肥料过磷酸钙、重过磷酸钙、磷酸二铵等。由于种肥直接接触种子或施用种子附近,施用不当会造成烧苗、
Fertilizers applied near the seeds when sowing or fertilizers sprinkled with the solution at a certain concentration are collectively referred to as seed fertilizers. The role of fertilizer is mainly to supply crop seedling nutrition and promote seedling growth; some kinds of fertilizer also has to improve the physical and chemical properties of seed beds and microbial activities, such as improving the ground temperature to prevent water evaporation and change the soil acid-base reaction. Fertilizer fertilizer to do easy to dissolve, quick-acting, good application effect, such as organic manure urine (mixed soil), excreta urine, bean cake residue, pock cake, chemical fertilizers in trace elements fertilizer superphosphate, Heavy superphosphate, such as diammonium phosphate. Due to the direct contact with seed or seed near the seeds, improper application will cause burning seedlings,