种肥是指播种或定植时施在种子附近或与种子混合施用的肥料,一般以速效性化肥或腐熟良好的优质农家肥做种肥。由于种肥常和种子直接接触或与种子距离较近,因此对肥料种类及其用量的要求较严,施用不当易引起烧种、烂种,造成缺苗断垄现象。凡浓度过大、过酸、过碱或含有毒性物质的化肥以及能够产生高温的化肥,均不宜做种肥施用。 Kind of fertilizer refers to the sowing or planting in the vicinity of the seeds or mixed with the application of fertilizers, usually with quick-acting fertilizer or well-decomposed good quality manure fertilizer. Due to the kind of fertilizer often in direct contact with seeds or close to the seeds, the requirements on the types and amount of fertilizers are more stringent. Improper application can easily lead to burning and rotting seeds, resulting in the phenomenon of lacking seedling and breaking ridge. Where the concentration is too large, too sour, over-alkali or containing toxic substances in fertilizers and can produce high temperature fertilizers, are not suitable for fertilizer application.